NUMCHECK option syntax

1! NONUMCHECK
1  NUMCHECK?  (
2.1+ ,
2.2.1  ZON
2.2.2.1?  (
2.2.2.2.1 ALPHNUM
2.2.2.2.1 NOALPHNUM
2.2.2.1 )
2.2.1 NOZON
2.2.1 PAC
2.2.1 NOPAC
2.2.1 BIN
2.2.1 NOBIN
2.2.1 MSG
2.2.1 ABD
1 )