X-Git-Url: https://diplodocus.org/git/nmh/blobdiff_plain/e6917522a770cf2dba9997ca047977bc55fac061..f8d3c4d16b4a2cf0034dc1159c0c68dc78fd0921:/man/mh-profile.man

diff --git a/man/mh-profile.man b/man/mh-profile.man
index cb85747f..f34ac4ba 100644
--- a/man/mh-profile.man
+++ b/man/mh-profile.man
@@ -671,6 +671,27 @@ This is the program used by
 .B whatnow
 to determine to whom a message would be sent.
 .RE
+.SS "Profile Lookup"
+Some
+.B nmh
+programs will look in more than just the user's 
+.I \&.mh\(ruprofile
+for profile entries.  In particular, 
+.BR mhbuild ,
+.BR mhshow ,
+.BR mhstore ,
+and
+.BR mhn 
+will also all look in a file specified by a program-specific
+environment variable (see below), and after that in 
+the system-installed profile (%etcdir%/mhn.defaults).  (The
+.B mhfixmsg
+program is similar, but doesn't consult an environment variable.)
+The first match found for a particular component will be used,
+allowing user-supplied entries to override those that are system-supplied.
+A profile component with a blank value field will "hide" any later
+occurrences of the component, and will make the entry appear to be
+absent.
 .SS "Environment Variables"
 The operation of
 .B nmh