mandoc: clarify the difference between .Cm and .Ic; triggered by a

mandoc: clarify the difference between .Cm and .Ic; triggered by a

[schwarze]

Log Message:
-----------
clarify the difference between .Cm and .Ic;
triggered by a question from Fabio Scotoni

Modified Files:
--------------
    mandoc:
        mdoc.7

Revision Data
-------------
Index: mdoc.7
===================================================================
RCS file: /home/cvs/mandoc/mandoc/mdoc.7,v
retrieving revision 1.277
retrieving revision 1.278
diff -Lmdoc.7 -Lmdoc.7 -u -p -r1.277 -r1.278
--- mdoc.7
+++ mdoc.7
@@ -1163,17 +1163,19 @@ declarations.
 This practise is discouraged.
 .It Ic \&Cm Ar keyword ...
 Command modifiers.
-Typically used for fixed strings passed as arguments, unless
+Typically used for fixed strings passed as arguments to interactive
+commands, to commands in interpreted scripts, or to configuration
+file directives, unless
 .Ic \&Fl
 is more appropriate.
-Also useful when specifying configuration options or keys.
 .Pp
 Examples:
 .Dl ".Nm mt Fl f Ar device Cm rewind"
 .Dl ".Nm ps Fl o Cm pid , Ns Cm command"
 .Dl ".Nm dd Cm if= Ns Ar file1 Cm of= Ns Ar file2"
-.Dl ".Cm IdentityFile Pa ~/.ssh/id_rsa"
-.Dl ".Cm LogLevel Dv DEBUG"
+.Dl ".Ic set Fl o Cm vi"
+.Dl ".Ic lookup Cm file bind"
+.Dl ".Ic permit Ar identity Op Cm as Ar target"
 .It Ic \&D1 Ar line
 One-line indented display.
 This is formatted by the default rules and is useful for simple indented
@@ -1684,10 +1686,10 @@ This macro is not implemented in
 .Xr mandoc 1 .
 It was used to include the contents of a (header) file literally.
 .It Ic \&Ic Ar keyword ...
-Designate an internal or interactive command.
-This is similar to
-.Ic \&Cm
-but used for instructions rather than values.
+Internal or interactive command, or configuration instruction
+in a configuration file.
+See also
+.Ic \&Cm .
 .Pp
 Examples:
 .Dl \&.Ic :wq
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