.RS 5
.ft B
.nf
-cmd=$(xgetline -t "Shell command in window" -p "Command:") &&
+cmd=$(xgetline -t "Shell command in window" -p "_Command:") &&
xterm -T "$cmd" -e sh -c "$cmd"
.ft R
.fi
.BI "\-p, \-\-prompt " prompt
Sets the prompt string in the dialogue box to
.IR prompt .
-The default is to have no prompt string.
+If the prompt string contains an underscore character
+.RB ` _ ',
+then the following character appears underlined; pressing Alt and the
+leftmost underlined character (the `mnemonic') moves the input focus to
+the entry widget. If you want a literal underscore, type two
+consecutive underscores. The default is to have no prompt string.
.TP 5
.BI "\-t, \-\-title " title
Sets the title of the dialogue box to