+.It Cm term_width
+Set a preferred minimum width for the terminal
+If this value is greater than 0,
+.Nm
+will attempt to adjust the font sizes in the terminal to keep the terminal
+width above this number as the window is resized.
+Only
+.Xr xterm 1
+is currently supported.
+The
+.Xr xterm 1
+binary must not be setuid or setgid, which it is by default on most systems.
+Users may need to set spawn term to use an alternate copy of the
+.Xr xterm 1
+binary without the setgid bit set.
+.It Cm modkey
+Change mod key.
+Mod1 is generally the ALT key and Mod4 is the windows key on a PC.