Hi Systemprogrammers :-) Most HP28-users have a sub-routine "wait_for_key", I suppose, which holds a prg until a key is pressed. It looks like: << "Press any key to cont" 4 DISP DO UNTIL KEY END DROP >> My improvement is to use the SHIFT-indicator instead of "Press any key to cont" << # SYSEVAL DO UNTIL KEY END DROP # SYSEVAL >> (set your HP to HEX-mode) 1BB 1CC 2BB --------------+----------+----------+----------- # ! #9C96 ! #9C61 ! #1F8A7 # ! #9CA3 ! #9C6E ! #1F8B4 (with #A SYSEVAL you can get your version-number) +------------------------------------------------------------------+ ! true name: Ulli Horlacher * e-mail: framstag@dtupev5a.bitnet ! ! nick name: Framstag * s_horlac@dulruu51.bitnet ! ! or Fraturday * 50177::s_horlacher ! ! * snail-mail: Ulli Horlacher ! ! * Landfriedbuehl 5 ! ! Universitaet Ulm * D-7900 Ulm ! ! West-Germany * West-Germany ! !******************************************************************! ! "Murphy was an optimist" ! +------------------------------------------------------------------+