C DEFINITION OF VARIABLES IN CLPCOM
C TYPNUL - NULL PARAMETER. I.E. ,,
C TYPEOL - END OF LINE
C TYPEL  - EMPTY LINE
C TYPINT - INTEGER
C TYPFLT - FLOATING POINT NUMBER
C TYPNAM - NAME. VALUE IS STORED IN STRVAL
C TYPSPC - SPECIAL TYPE. VALUE IS STORED IN CHRVAL
C TLU    - TERMINAL LOGICAL UNIT
C CLPEFN - EVENT FLAG USABLE BY ANYONE WHO WAITS IMMEDIATELY
C CNTLZ  - HAS USER GIVEN CNTL/Z
C TRACE  - TRACE LINES FROM COMMAND FILE?
C LINE   - CURRENT COMMAND LINE
C NXTCHR - NEXT CHARACTER OF LINE FOR TOKEN
C TOKLEN - LENGTH OF PREVIOUS TOKEN
C TOKTYP - TYPE OF PREVIOUS TOKEN
C INTVAL - INTEGER VALUE OF PREVIOUS TOKEN
C FLTVAL - FLOATING POINT VALUE OF PREVIOUS TOKEN
C STRVAL - STRING VALUE OF PREVIOUS TOKEN
C CHRVAL - CHARACTER VALUE OF PREVIOUS TOKEN
C USICHR - UNSOLICITED INTERRUPT CHARACTER