recognizes a few environment variables.
.TP
.B MTR_OPTIONS
-This environment variable allows to specify options, as if they were
-passed on the command line. It is parsed before reading the actual
-command line options, so that options specified in
+This environment variable allows one to specify options, as if they
+were passed on the command line. It is parsed before reading the
+actual command line options, so that options specified in
.B MTR_OPTIONS
are overridden by command-line options.