Good documentation is essential for users to fully understand any software. Several PEAR packages lack documentation or have docs which need improvement. Writing documentation provides more information about helping out on this front.
Translating documentation is another important task. Not only does new documentation need to be translated into the existing languages, additional languages are welcome. Also, existing translations need to be brought up to date because the English versions have been changed. Help on how to perform the translation process is in the Revision Tracking section of the manual.