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- dependency-name: stylelint-config-recommended
  dependency-type: direct:development
  update-type: version-update:semver-major

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DITA Open Toolkit Docs Build Status Slack

This repository tracks the documentation source files for the DITA Open Toolkit project.

Building the documentation output

⚠️ Important: The maps in this repository contain references to additional topics that are created at build time from the toolkit’s plug-in configuration.

To generate the missing topics and build the HTML and PDF versions of the documentation, run the Gradle build script from the root level of the docs repository and pass the path to your DITA-OT installation as a parameter.


You must have a JRE and a local installation of DITA-OT. There is no need to download and install Gradle.


  1. Open a command prompt, and change to the directory of your docs repository clone.

  2. Type a variant of the following command for your operating system, adjust the path to your DITA-OT installation, and press Enter:

    • On Linux or macOS, use ./gradlew:

      ./gradlew -PditaHome=/path/to/dita-ot
    • On Windows, use gradlew.bat:

      gradlew.bat -PditaHome=C:\path\to\dita-ot
    Using a `dita-ot` repository clone
    • If you’re using a clone of the DITA-OT development repository as your toolkit installation alongside your clone of the docs repository, run the build script on Linux or macOS like this:

        ./gradlew -PditaHome=../dita-ot/src/main
    • You can also specify a single output format. To build HTML output, enter the following on the command line:

        ./gradlew -PditaHome=../dita-ot/src/main html


If all goes well, you receive a "BUILD SUCCESSFUL" message, and the generated DITA topics are written to the extension-points and parameters directories in the out folder of the docs repository.

This folder is created automatically if it doesn’t exist. (Git ignores the contents so you don’t inadvertently commit these transient output files.)

Building with development versions of DITA Open Toolkit

The develop branch of the documentation repository may depend on features from recent development versions of DITA Open Toolkit.

To use these features when building the documentation, you may either download the latest development version of the distribution package, or clone the DITA-OT repository and install the bundled plug-ins via dita --install.

Contribution guidelines

We welcome contributions to the DITA-OT documentation. Please review the guidelines for contributing to this repository before creating issues or opening pull requests.

For best results, follow the coding guidelines and best practices outlined in the docs project wiki:

Installing formatting tools

The documentation repository uses the following JavaScript tools to keep source files consistently formatted:

  • Prettier is an opinionated code formatter that enforces a consistent style by parsing code and re-printing it.
  • Husky uses Git hooks to ensure that Prettier runs on all staged changes to format files before committing.


  • You must have a stand-alone installation of Git from
  • Include the Git installation location in the PATH environment variable.


To set these tools up:

  1. Install Node.js® from
  2. Open a command prompt, and change to the directory of your docs repository clone.
  3. Run npm install

With these tools in place, any changes you make to the documentation source files will be automatically formatted when you commit them with Git. This ensures that commits contain only related changes, and no extra formatting.


If the git command is not available in your command-line environment, the Husky installation may fail with an error message:

"Cannot read property 'toString' of null"

Solution: Uninstall Husky via npm husky uninstall. Install Git. Add the installation location to the PATH environment variable. Re-run npm install.

Running Prettier

If you'd like to check whether your changes are formatted correctly, or format them before committing, you can run Prettier manually from the command line.

Check formatting

npm run check

Format all files

npm run format