1 - Introduction

   PSCalc is a scientific calculator and plotter completely
   developped in C with the SAC/C 6.57 package and FrexxEd demo version.

   It's a commodity too. That's mean that you can control PSCalc
   with the Exchange commodity of the Workbench:
   you can quit, show / hide PSCalc's windows with it.
   That's mean too, you can use and define a hotkey to show / hide the
   Main window.

   You can also use standard commodities tooltypes in
   the PSCalc's icon.