.TP
.B \-d, \-\-defines
Create tag entries for C preprocessor constant definitions
-and enum constants, too. This is the
-default behavior for \fBetags\fP.
+and enum constants, too. Since this is the default behavior of
+\fBetags\fP, only \fBctags\fP accepts this option.
.TP
.B \-D, \-\-no\-defines
Do not create tag entries for C preprocessor constant definitions
and enum constants.
This may make the tags file much smaller if many header files are tagged.
-This is the default behavior for \fBctags\fP.
+Since this is the default behavior of \fBctags\fP, only \fBetags\fP
+accepts this option.
.TP
-.B \-g, \-\-globals
+.B \-\-globals
Create tag entries for global variables in C, C++, Objective C, Java,
and Perl.
-This is the default behavior for \fBetags\fP.
+Since this is the default behavior of \fBetags\fP, only \fBctags\fP
+accepts this option.
.TP
-.B \-G, \-\-no\-globals
+.B \-\-no\-globals
Do not tag global variables. Typically this reduces the file size by
-one fourth. This is the default behavior for \fBctags\fP.
+one fourth. Since this is the default behavior of \fBctags\fP, only
+\fBetags\fP accepts this option.
.TP
\fB\-i\fP \fIfile\fP, \fB\-\-include=\fIfile\fP
Include a note in the tag file indicating that, when searching for a
tag, one should also consult the tags file \fIfile\fP after checking the
-current file. This options is only accepted by \fBetags\fP.
+current file. Only \fBetags\fP accepts this option.
.TP
.B \-I, \-\-ignore\-indentation
Don't rely on indentation as much as we normally do. Currently, this