base64) or specify a character set that
.B show
doesn't believe
-can be displayed natively. The environment variable
-.B $MM_CHARSET
+can be displayed natively. The appropriate
+.IR locale (1)
+environment variables
should be set to the terminal's native character set to avoid
gratuitous invocations of the
.IR showmimeproc .
See the
-.IR mh-profile (5)
-man page for details about this environment variable.
+.IR locale (1)
+man page for details about these environment variables.
.PP
The option
.B \-checkmime