CFC <address> {parameters}
        --> [return value destination]

  Call function
     

STW <base address> <word index> <value>

  Store word


STB <base address> <byte index> <value>

  Store byte


STP <object no.> <property no.> <value>

  Store property


INP <line buffer> <parsed word buffer> <timeout> <timeout call address>
        { --> [terminating character destination] }

  Input line


WTC <character>

  Write single character


WTI <integer>

  Write integer


RND <maxmimal value> --> [random number destination]

  Generate random number


PSH <operand to push>

  push operand onto top of stack


PUL <popped value destination>

  pull word from top of stack and store in specified destination


SPL

  split screen


POS

  choose window


ERS

  erase area on screen


ERL #1

   erase line


GYX <y-coord> <x-coord>

  move cursor to specified position on screen


SCM

  change screen mode


FRM

  set format mode


OUT

  set output mode


COM

  set com? mode


BEL

  ring bell? sound?


INK

  input key


BEQ

  block equal


NEG <operand to negate>

  negate word


PRS

  parse line


PAK

  pack characters to a word in packed vocabulary format


BCP

  block copy


WTA

  write text area


MNP

  minimal number of call parameters


SVE --> [result destination]