-hook is needed to use [[plugins/attachments]] or [[plugins/comments]]. And so
-on. The table below summarises this for each revision control system and links
-to more information about each.
+hook is needed to use [[attachments|plugins/attachment]] or
+[[plugins/comments]]. `rcs_getctime` may be implemented in a fast way
+(ie, one log lookup for all files), or very slowly (one lookup per file).
+And so on. The table below summarises this for each revision control
+system and links to more information about each.