The OpenOCD User's Guide presently exists entirely within the doc/openocd.texi document.

That file contains documentation with mark-up suitable for being parsed by the GNU Texinfo utilities (http://www.gnu.org/software/texinfo/).

When you add a new command, driver, or driver option, it needs to be documented in the User's Guide. Use the existing documentation for models, but feel free to make better use of Texinfo mechanisms. See the Texinfo web site for the Texinfo manual and more information.

OpenOCD style guidelines for Texinfo documentation can be found on the Texinfo Style Guide page.