CALCINIT()     Set calculator color or color tables
 CALCPOS()      Set calculator initial screen position
 CALCUDF()      Set calculator key handler block.
 CALCMEMORY()   Get/Set calculator static memory
 CALCPRINT()    Set calculator printing status (normal, hold, hold all)
 CALCPTAPE()    Get/Set Calculator printing tape
 CALCREG()      Register the On-screen Full-Function Calculator
 CALCULATOR()   On-screen Full-Function Calculator