Fix spec template formatting
No change to any verbiage here. Just comply with the following formatting requirement in the template: * Please wrap text at 79 columns. Change-Id: I02871d2d999ccd6063720e66b6de0cb3b666018d Signed-off-by: Robert Church <robert.church@windriver.com>
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Robert Church
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.. This work is licensed under a Creative Commons Attribution 3.0 Unported License. http://creativecommons.org/licenses/by/3.0/legalcode
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..
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This work is licensed under a Creative Commons Attribution 3.0 Unported
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License. http://creativecommons.org/licenses/by/3.0/legalcode
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.. Many thanks to the OpenStack Nova team for the Example Spec that formed the basis for this document.
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..
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Many thanks to the OpenStack Nova team for the Example Spec that formed the
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basis for this document.
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=======================
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=======================
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StarlingX: Example Spec
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StarlingX: Example Spec
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@ -8,25 +12,23 @@ StarlingX: Example Spec
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Some notes about the Spec process:
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Some notes about the Spec process:
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* The aim of this document is first to define the problem we need to solve,
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* The aim of this document is first to define the problem we need to solve, and
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and second agree on the overall approach to solve that problem.
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second agree on the overall approach to solve that problem.
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* This is not intended to be extensive documentation for a new feature.
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* This is not intended to be extensive documentation for a new feature. For
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For example, there is no need to specify the exact configuration changes,
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example, there is no need to specify the exact configuration changes, nor the
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nor the exact details of any DB model changes. But you should still define
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exact details of any DB model changes. But you should still define that such
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that such changes are required, and be clear on how that will affect
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changes are required, and be clear on how that will affect upgrades.
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upgrades.
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* You should aim to get your spec approved before writing your code.
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* You should aim to get your spec approved before writing your code. While you
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While you are free to write prototypes and code before getting your spec
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are free to write prototypes and code before getting your spec approved, its
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approved, its possible that the outcome of the spec review process leads
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possible that the outcome of the spec review process leads you towards a
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you towards a fundamentally different solution than you first envisaged.
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fundamentally different solution than you first envisaged.
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* But, API changes are held to a much higher level of scrutiny.
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* But, API changes are held to a much higher level of scrutiny. As soon as an
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As soon as an API change merges, we must assume it could be in production
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API change merges, we must assume it could be in production somewhere, and as
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somewhere, and as such, we then need to support that API change forever.
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such, we then need to support that API change forever. To avoid getting that
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To avoid getting that wrong, we do want lots of details about API changes
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wrong, we do want lots of details about API changes upfront.
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upfront.
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Some notes about using this template:
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Some notes about using this template:
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@ -34,12 +36,13 @@ Some notes about using this template:
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* Please wrap text at 79 columns.
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* Please wrap text at 79 columns.
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* The filename in the git repository should include the StoryBoard number and name,
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* The filename in the git repository should include the StoryBoard number and
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for example a Story at https://storyboard.openstack.org/#!/story/1234567
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name, for example a Story at
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should be named [category]_1234567-feature-name.rst (refer to instructions.rst
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https://storyboard.openstack.org/#!/story/1234567 should be named
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for guidelines on a suitable category name)
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[category]_1234567-feature-name.rst (refer to instructions.rst for guidelines
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on a suitable category name)
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* Please do not delete any of the sections in this template. If you have
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* Please do not delete any of the sections in this template. If you have
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nothing to say for a whole section, just write: None
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nothing to say for a whole section, just write: None
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* For help with syntax, see http://sphinx-doc.org/rest.html
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* For help with syntax, see http://sphinx-doc.org/rest.html
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@ -48,11 +51,11 @@ Some notes about using this template:
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HTML file in doc/build/html/specs/<path_of_your_file>
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HTML file in doc/build/html/specs/<path_of_your_file>
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* If you would like to provide a diagram with your spec, ascii diagrams are
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* If you would like to provide a diagram with your spec, ascii diagrams are
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required. http://asciiflow.com/ is a very nice tool to assist with making
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required. http://asciiflow.com/ is a very nice tool to assist with making
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ascii diagrams. The reason for this is that the tool used to review specs is
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ascii diagrams. The reason for this is that the tool used to review specs is
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based purely on plain text. Plain text will allow review to proceed without
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based purely on plain text. Plain text will allow review to proceed without
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having to look at additional files which can not be viewed in gerrit. It
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having to look at additional files which can not be viewed in gerrit. It will
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will also allow inline feedback on the diagram itself.
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also allow inline feedback on the diagram itself.
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Example Spec - The title of your blueprint
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Example Spec - The title of your blueprint
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@ -60,24 +63,26 @@ Example Spec - The title of your blueprint
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Include the URL of your Storyboard Story:
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Include the URL of your Storyboard Story:
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Storyboard: https://storyboard.openstack.org/#!/story/list?status=active&project_group_id=86
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Storyboard:
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https://storyboard.openstack.org/#!/story/list?status=active&project_group_id=86
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Introduction paragraph -- why are we doing anything? The essential "Why" or motivation is key to laying the ground for the work ahead. It provides contexts for all involved in the work. A single paragraph of
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Introduction paragraph -- why are we doing anything? The essential "Why" or
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prose that operators can understand. The title and this first paragraph
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motivation is key to laying the ground for the work ahead. It provides contexts
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should be used as the subject line and body of the commit message
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for all involved in the work. A single paragraph of prose that operators can
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respectively.
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understand. The title and this first paragraph should be used as the subject
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line and body of the commit message respectively.
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Problem description
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Problem description
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===================
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===================
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A detailed description of the problem. What problem is this spec
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A detailed description of the problem. What problem is this spec addressing?
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addressing?
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Use Cases
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Use Cases
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=========
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=========
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What use cases does this address? What impact on actors does this change have?
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What use cases does this address? What impact on actors does this change have?
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Ensure you are clear about the actors/personas in each use case: Developer, End User, Deployer etc.
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Ensure you are clear about the actors/personas in each use case: Developer, End
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User, Deployer etc.
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Proposed change
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Proposed change
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===============
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===============
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@ -89,24 +94,25 @@ If this is one part of a larger effort make it clear where this piece ends. In
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other words, what's the scope of this effort?
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other words, what's the scope of this effort?
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At this point, if you would like to just get feedback on if the problem and
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At this point, if you would like to just get feedback on if the problem and
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proposed change fit in StarlingX, you can stop here and post this for review to get preliminary feedback. If so please say:
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proposed change fit in StarlingX, you can stop here and post this for review to
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Posting to get preliminary feedback on the scope of this spec.
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get preliminary feedback. If so please say: Posting to get preliminary feedback
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on the scope of this spec.
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Alternatives
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Alternatives
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============
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============
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What other ways could we do this thing? Why aren't we using those? This
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What other ways could we do this thing? Why aren't we using those? This doesn't
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doesn't have to be a full literature review, but it should demonstrate that
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have to be a full literature review, but it should demonstrate that thought has
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thought has been put into why the proposed solution is an appropriate one.
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been put into why the proposed solution is an appropriate one.
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Data model impact
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Data model impact
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=================
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=================
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Changes which require modifications to the data model often have a wider
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Changes which require modifications to the data model often have a wider impact
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impact on the system. The community often has strong opinions on how the data
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on the system. The community often has strong opinions on how the data model
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model should be evolved, from both a functional and performance perspective.
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should be evolved, from both a functional and performance perspective. It is
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It is therefore important to capture and gain agreement as early as possible
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therefore important to capture and gain agreement as early as possible on any
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on any proposed changes to the data model.
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proposed changes to the data model.
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Questions which need to be addressed by this section should include:
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Questions which need to be addressed by this section should include:
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@ -122,54 +128,53 @@ REST API impact
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Each API method which is either added or changed should have the following
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Each API method which is either added or changed should have the following
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* Specification for the method : As best as can be determined at
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* Specification for the method : As best as can be determined at the definition
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the definition stage.
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stage.
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* Parameters which can be passed via the url
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* Parameters which can be passed via the url
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* Example use case including typical API samples for both data supplied
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* Example use case including typical API samples for both data supplied by the
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by the caller and the response
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caller and the response
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* Discuss any policy changes, and discuss what things a deployer needs to
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* Discuss any policy changes, and discuss what things a deployer needs to think
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think about when defining their policy.
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about when defining their policy.
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Note that the schema should be defined as restrictively as
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Note that the schema should be defined as restrictively as possible. Parameters
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possible. Parameters which are required should be marked as such and
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which are required should be marked as such and only under exceptional
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only under exceptional circumstances should additional parameters
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circumstances should additional parameters which are not defined in the schema
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which are not defined in the schema be permitted (eg
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be permitted (eg additionaProperties should be False).
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additionaProperties should be False).
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Reuse of existing predefined parameter types such as regexps for
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Reuse of existing predefined parameter types such as regexps for passwords and
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passwords and user defined names is highly encouraged.
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user defined names is highly encouraged.
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Security impact
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Security impact
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===============
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===============
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Describe any potential security impact on the system. Some of the items to
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Describe any potential security impact on the system. Some of the items to
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consider include:
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consider include:
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* Does this change touch sensitive data such as tokens, keys, or user data?
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* Does this change touch sensitive data such as tokens, keys, or user data?
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* Does this change alter the API in a way that may impact security, such as
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* Does this change alter the API in a way that may impact security, such as a
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a new way to access sensitive information or a new way to login?
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new way to access sensitive information or a new way to login?
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* Does this change involve cryptography or hashing?
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* Does this change involve cryptography or hashing?
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* Does this change require the use of sudo or any elevated privileges?
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* Does this change require the use of sudo or any elevated privileges?
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* Does this change involve using or parsing user-provided data? This could
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* Does this change involve using or parsing user-provided data? This could be
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be directly at the API level or indirectly such as changes to a cache layer.
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directly at the API level or indirectly such as changes to a cache layer.
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* Can this change enable a resource exhaustion attack, such as allowing a
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* Can this change enable a resource exhaustion attack, such as allowing a
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single API interaction to consume significant server resources? Some examples
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single API interaction to consume significant server resources? Some examples
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of this include launching subprocesses for each connection, or entity
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of this include launching subprocesses for each connection, or entity
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expansion attacks in XML.
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expansion attacks in XML.
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For more detailed guidance, please see the OpenStack Security Guidelines as
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For more detailed guidance, please see the OpenStack Security Guidelines as a
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a reference (https://wiki.openstack.org/wiki/Security/Guidelines). These
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reference (https://wiki.openstack.org/wiki/Security/Guidelines). These
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guidelines are a work in progress and are designed to help you identify
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guidelines are a work in progress and are designed to help you identify
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security best practices. For further information, feel free to reach out
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security best practices. For further information, feel free to reach out to the
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to the OpenStack Security Group at openstack-security@lists.openstack.org.
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OpenStack Security Group at openstack-security@lists.openstack.org.
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Other end user impact
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Other end user impact
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=====================
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=====================
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@ -183,9 +188,9 @@ feature?
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Performance Impact
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Performance Impact
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==================
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==================
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Describe any potential performance impact on the system, for example
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Describe any potential performance impact on the system, for example how often
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how often will new code be called, and is there a major change to the calling
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will new code be called, and is there a major change to the calling pattern of
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pattern of existing code.
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existing code.
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Examples of things to consider here include:
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Examples of things to consider here include:
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@ -207,12 +212,12 @@ Examples of things to consider here include:
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Other deployer impact
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Other deployer impact
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=====================
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=====================
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Discuss things that will affect how you deploy and configure OpenStack
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Discuss things that will affect how you deploy and configure OpenStack that
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that have not already been mentioned, such as:
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have not already been mentioned, such as:
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* What config options are being added? Should they be more generic than
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* What config options are being added? Should they be more generic than
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proposed? Are the default values ones which will work well in
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proposed? Are the default values ones which will work well in real
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real deployments?
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deployments?
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* Is this a change that takes immediate effect after its merged, or is it
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* Is this a change that takes immediate effect after its merged, or is it
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something that has to be explicitly enabled?
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something that has to be explicitly enabled?
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@ -221,7 +226,7 @@ that have not already been mentioned, such as:
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* Please state anything that those those upgrading from the previous release,
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* Please state anything that those those upgrading from the previous release,
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need to be aware of. Also describe any plans to deprecate configuration
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need to be aware of. Also describe any plans to deprecate configuration
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values or features. Consider the potential implications of automated
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values or features. Consider the potential implications of automated
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deployment technologies.
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deployment technologies.
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Developer impact
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Developer impact
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@ -234,12 +239,12 @@ Upgrade impact
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Describe any potential upgrade impact on the system, such as:
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Describe any potential upgrade impact on the system, such as:
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* StarlingX supports N-1 version for rolling upgrades. Does
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* StarlingX supports N-1 version for rolling upgrades. Does the proposed change
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the proposed change need to consider older code running that may impact how
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need to consider older code running that may impact how the new change
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the new change functions, for example, by changing or overwriting global
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functions, for example, by changing or overwriting global state in the
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state in the database? This is generally most problematic when making changes
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database? This is generally most problematic when making changes that involve
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that involve multiple compute hosts, like move operations such as migrate,
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multiple compute hosts, like move operations such as migrate, resize,
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resize, unshelve and evacuate.
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unshelve and evacuate.
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Implementation
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Implementation
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@ -276,8 +281,8 @@ but we're mostly trying to understand the timeline for implementation.
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Dependencies
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Dependencies
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============
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============
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* Include specific references to specs in StarlingX, or in other
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* Include specific references to specs in StarlingX, or in other projects, that
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projects, that this one either depends on or is related to.
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this one either depends on or is related to.
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* If this requires functionality of another project that is not currently used
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* If this requires functionality of another project that is not currently used
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by StarlingX document that fact.
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by StarlingX document that fact.
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@ -289,16 +294,16 @@ Dependencies
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Testing
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Testing
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=======
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=======
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Please discuss the important scenarios needed to test here, as well as
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Please discuss the important scenarios needed to test here, as well as specific
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specific edge cases we should be ensuring work correctly. For each
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edge cases we should be ensuring work correctly. For each scenario please
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scenario please specify if this requires specialized hardware, a full
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specify if this requires specialized hardware, a full openstack environment, or
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openstack environment, or can be simulated inside the project tree.
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can be simulated inside the project tree.
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Please discuss how the change will be tested. We especially want to know what
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Please discuss how the change will be tested. We especially want to know what
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tempest tests will be added. It is assumed that unit test coverage will be
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tempest tests will be added. It is assumed that unit test coverage will be
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added so that doesn't need to be mentioned explicitly, but discussion of why
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added so that doesn't need to be mentioned explicitly, but discussion of why
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you think unit tests are sufficient and we don't need to add more
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you think unit tests are sufficient and we don't need to add more tests would
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tests would need to be included.
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need to be included.
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Is this untestable in gate given current limitations (specific hardware /
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Is this untestable in gate given current limitations (specific hardware /
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software configurations available)? If so, are there mitigation plans (3rd
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software configurations available)? If so, are there mitigation plans (3rd
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@ -309,12 +314,12 @@ Documentation Impact
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====================
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====================
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Which audiences are affected most by this change, and which documentation
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Which audiences are affected most by this change, and which documentation
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titles for StarlingX should be updated because of this change? Don't
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titles for StarlingX should be updated because of this change? Don't repeat
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repeat details discussed above, but reference them here in the context of
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details discussed above, but reference them here in the context of
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documentation for multiple audiences. For example, the End User Guide would
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documentation for multiple audiences. For example, the End User Guide would
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need to be updated if the change offers a new feature available through the
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need to be updated if the change offers a new feature available through the CLI
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CLI or dashboard. If a config option changes or is deprecated, note here that
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or dashboard. If a config option changes or is deprecated, note here that the
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the documentation needs to be updated to reflect this specification's change.
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documentation needs to be updated to reflect this specification's change.
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References
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References
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==========
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==========
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@ -329,7 +334,7 @@ references are unavailable. Examples of what you could include are:
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* Links to relevant research, if appropriate
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* Links to relevant research, if appropriate
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* Related specifications as appropriate (e.g. if it's an EC2 thing, link the
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* Related specifications as appropriate (e.g. if it's an EC2 thing, link the
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EC2 docs)
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EC2 docs)
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* Anything else you feel it is worthwhile to refer to
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* Anything else you feel it is worthwhile to refer to
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@ -349,4 +354,3 @@ what's happened along the time.
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- Description
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- Description
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* - Stein
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* - Stein
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- Introduced
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- Introduced
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