PROCEDURE: ylimit PURPOSE: Interactive setting of y-limits for the "TPLOT" procedure. SEE ALSO: "YLIM", a noninteractive version which calls this routine. NOTES: This procedure will probably be made obsolete by embedding it in. "YLIM". Run "TPLOT" prior to using this procedure. CREATED BY: Davin Larson FILE: ylimit.pro VERSION: 1.11 LAST MODIFICATION: 98/08/06