MPE/iX Shell and Utilities Reference Manual, Vol 2

lex(3) MPE/iX Shell and Utilities lex(3)
ECHO is a statement that copies the matched input token yytext to the lex output
stream yyout.
REJECT is a statement that causes the current match to be discarded and the next
possible match, if any, to be examined.
yymore is a function that causes the next token to be concatenated to the current to-
ken in yytext. The current token is not rescanned.
yyless is a function that shrinks the matched input in yytext to n characters. The
remaining characters are rescanned by yylex().
FILES
/usr/lib/libl.a UNIX LEX library
SEE ALSO
lex(1), yacc(1)
LEX Programming Guide
3-8 Miscellaneous Information