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Continuous Integration

A development process where commits are integrated frequently, and automated builds and tests are triggered for each commit.

Context Diff

A type of diff file that represents changes to a file using before/after sections. These are not well supported by Review Board.

Context diffs indicate a changed region of a file by showing before and after versions of a group of lines. The changed lines in that before and after region are indicated by beginning the lines with an exclamation point (!). Changes that only add lines only show one section.

Cumulative Diff

A diff that represents a squashed set of commits, each of which has their own diffs. It is equivalent to applying all of the diffs for all the commits in order.

Default Reviewer
Default Reviewers

A feature that allows individual users or review groups to be automatically assigned as reviewers to a review request based on the repository or files being modified.

Diff File

A file representing changes to one or more files. Common diff formats are unified diffs and context diffs.


DomainKeys Identified Mail, a method for validating that an e-mail claiming to have come from a domain actually came from that domain. See the Wikipedia article for more information.


Domain Message Authentication, Reporting & Conformance. This is an e-mail standard for specifying policies around e-mail sender validation, allowing spoofed/malicious e-mails to be rejected or quarantined, amongst other capabilities. See the Wikipedia article <https://en.wikipedia.org/wiki/DMARC> and the official DMARC website <https://dmarc.org/> for more information.

Review Board checks DMARC rejection/quarantine policies before attempting to send e-mails on behalf of users. See Working with E-Mail for more information.


A term used for a review request or review that’s been created or modified but not yet published for others to see. We store these in a draft state so that the review request or review can be fully composed before, giving users control over when they’re finished and ready for feedback.

Draft Bar

A green bar that represents an active draft for a review request or review, allowing the draft to be discarded or published.

Evolution File

A file that contains information on how to make changes to the database schema (in a database-agnostic way). These files are shipped with Review Board or extensions and are applied automatically during site upgrade or when enabling an extension.


An interdiff is a diff between diffs. They show what has changed between two versions of a diff, which is useful when making incremental changes to a very large diff.

Local Site
Local Sites

One or more divisions of a Review Board site. Local sites act as individual Review Board sites with their own set of repositories, user lists, and other data, but share the same database and site install. This is an advanced feature.


A simple markup language which allows basic formatting such as headings, lists, links, code blocks, and images. Many of the multi-line fields in Review Board use Markdown to format their contents. See John Gruber’s Markdown Syntax Overview for more information.


OAuth2 is a framework that allows third-party applications to gain limited access to user accounts, without the owner of that account divulging their authentication credentials.

Post-commit Hook

A script that is executed after a commit is made to a repository. See Automating rbt post for ways to use post-commit hooks to automate submitting review requests to Review Board.

Post-commit Review

A form of code review where code is reviewed after it is submitted to a repository, usually in a development branch.

Pre-commit Review

A form of code review where code is reviewed before it even goes into a repository. This is generally a more strict way to handle code review, which can lead to fewer problems in the codebase.

Private Review Requests

A review request that can only be accessed by users meeting certain criteria, such as being on an access list for a group or repository. See Access Control for more information.

Python Eggs

A type of binary package for Python applications. These are installed via pip.

Historically, this was the main way that Python applications, Review Board included, would be packaged and distributed. They have since been replaced by a new format, Python Wheels.

Python Entry Point
Python Entry Points

A mechanism used by Python packages to register classes so that they can be found by other Python applications. This is often used for pluggable features. Review Board uses this to register extensions, repository support, and more.

Python Wheels

The modern package format for Python applications. These are installed using modern versions of the pip package installer.

Review Group
Review Groups

A group of users, often a team or set of owners on a component, that can be assigned as a targetted reviewer for a review request.

Review Request
Review Requests

A review request is a collection of assets (such as source code, documents, and test data) and information (such as a summary, description, testing, and branch information) put up for review.

Unified Diff

A type of diff file designed to be easy to parse and easy to read by humans. This is the format supported by Review Board.

Unified diffs indicate the changed region of a file by showing some unchanged lines of context, then lines beginning with a minus sign (-) to show removed lines or a plus sign (+) to show added lines. Replaced lines are shown by a remove line followed by an add line.