-.SS Overview
-dmenu is a generic menu for X, originally designed for
-.BR dwm (1).
-It manages huge amounts (up to 10.000 and more) of user defined menu items
-efficiently.
-.SS Options
+.B dmenu
+is a dynamic menu for X, which reads a list of newline\-separated items from
+stdin. When the user selects an item and presses Return, their choice is printed
+to stdout and dmenu terminates. Entering text will narrow the items to those
+matching the tokens in the input.
+.P
+.B dmenu_run
+is a script used by
+.IR dwm (1)
+which lists programs in the user's $PATH and runs the result in their $SHELL.
+.SH OPTIONS
+.TP
+.B \-b
+dmenu appears at the bottom of the screen.
+.TP
+.B \-f
+dmenu grabs the keyboard before reading stdin if not reading from a tty. This
+is faster, but will lock up X until stdin reaches end\-of\-file.