-.SH FILES
-/usr/bin/t4013
-.br
-/usr/bin/tek
-.br
-/usr/bin/t450
-.br
-/usr/bin/t300
-.br
-/usr/bin/t300s
-.br
-/usr/bin/aedplot
-.br
-/usr/bin/bgplot
-.br
-/usr/bin/crtplot
-.br
-/usr/bin/dumbplot
-.br
-/usr/bin/gigiplot
-.br
-/usr/bin/hpplot
-.br
-/usr/ucb/lpr
-.SH "SEE ALSO"
-plot(3X), plot(3F), plot(5), lpr(1)
+.Sh ENVIRONMENT
+.Tw Fl
+.Tp Ev TERM
+Used to determine the terminal type if not given as an argument.
+.Sh FILES
+.Dw /usr/bin/gigiplot
+.Di L
+.Dp Pa /usr/bin/t4013
+.Dp Pa /usr/bin/tek
+.Dp Pa /usr/bin/t450
+.Dp Pa /usr/bin/t300
+.Dp Pa /usr/bin/t300s
+.Dp Pa /usr/bin/aedplot
+.Dp Pa /usr/bin/bgplot
+.Dp Pa /usr/bin/crtplot
+.Dp Pa /usr/bin/dumbplot
+.Dp Pa /usr/bin/gigiplot
+.Dp Pa /usr/bin/hpplot
+.Dp Pa /usr/bin/implot
+.Dp Pa /usr/ucb/lpr
+.Dp
+.Sh SEE ALSO
+.Xr plot 3 ,
+.Xr plot 5 ,
+.Xr lpr 1
+.Sh HISTORY
+.Nm Plot
+appeared in Version 6 AT&T UNIX.