-.TP
-.I -f
-makes a ``field'' for the worm(s) to eat.
-.TP
-.I -t
-causes each worm to leave a trail behind it.
-.PP
-You can figure out the rest by yourself.
-.SH AUTHOR
-Eric P. Scott
-.SH BUGS
-The lower-right-hand character position will not be updated properly
-on a terminal that wraps at the right margin.
+.Bl -tag -width XlXlengthXX
+.It Fl d Ar delay
+Specifies
+.Ar delay
+as a delay, in milliseconds, between each update.
+This is useful for fast terminals.
+Reasonable values are around 20-200;
+the default is 0.
+.It Fl f
+Makes a
+.Dq field
+for the worm(s) to eat.
+.It Fl l Ar length
+Specifies
+.Ar length
+as a length for each worm; the default is 16.
+.It Fl n Ar number
+Specifies
+.Ar number
+as the number of worms; the default is 3.
+.It Fl t
+Makes each worm leave a trail behind it.
+.El