label FOR MY remember my_scalar '(' mexpr ')' mblock cont
label FOR scalar '(' remember mexpr ')' mblock cont
label FOR '(' remember mexpr ')' mblock cont
label FOR '(' remember mnexpr ';' texpr ';' mintro mnexpr ')'
my_scalar:  scalar
scalar  :   '$' indirob
indirob :   WORD
        |   scalar %prec PREC_LOW
        |   block
        |   PRIVATEREF