Compendium is a PO file including translations for common strings; it is used to fill other PO files. See Using Translation Compendia in GNU gettext tools. One example of such common strings is the footer text about reporting bugs and sending inquiries: when a webmaster updates footer texts in an article, GNUN will use compendia to automatically fill the translations for the new version of the strings.
GNUN has two types of compendia:
|• Site-Wide Compendia:||Common translations for all articles|
|• Per-Directory Templates:||Files that contain all strings from all articles in the directory|