Updated documentation.

RELEASE_NOTES.md

@@ -2,7 +2,7 @@
 
 ## 2.50
 
-Posts can now be filtered out by content using regular expressions on a server level (these regexes are written in the `filter_reject.txt` file at the server base directory; see `snac(8)`).
+Posts can now be filtered out by content using regular expressions on a server level (these regexes are written in the `filter_reject.txt` file at the server base directory; see `snac(5)` and `snac(8)`).
 
 Improved page position after hitting the `Hide` or `MUTE` buttons (for most cases).
 

doc/snac.5

@@ -106,6 +106,11 @@ This file is served when the server base URL is requested from a web browser. Se
 for more information about the customization options.
 .It Pa public.idx
 This file contains the list of public posts from all users in the server.
+.It Pa filter_reject.txt
+This (optional) file contains a list of regular expressions, one per line, to be
+applied to the content of all incoming posts; if any of them match, the post is
+rejected. This brings the flexibility and destruction power of regular expressions
+to your Fediverse experience. To be used wisely.
 .El
 .Pp
 Each user directory is a subdirectory of