FILE ::= `file' [`.'] FSPEC [`,' FSPEC]\n\
FSPEC ::= FD-SPEC | NAME-SPEC | NULL-SPEC\n\
FD-SPEC ::= [[`:']`fd'[`:']] NUMBER|`stdin'|`stdout'\n\
FILE ::= `file' [`.'] FSPEC [`,' FSPEC]\n\
FSPEC ::= FD-SPEC | NAME-SPEC | NULL-SPEC\n\
FD-SPEC ::= [[`:']`fd'[`:']] NUMBER|`stdin'|`stdout'\n\