16384 - the zone size information is this higher than nominal in a 680X0 (X>=2)

4280 - the zone size information is this much bigger in system 7 than system 6

Open Prolog Additions

extn - code for folder in which the resources folder is to be found

1 1 for sequential clause selection, 0 for pseudo-random selection

60 ticks before cursor is updated after going busy

20 ticks between updates of busy cursor

31 default eoln character

26 default eof character