hex EXPR hex Interprets EXPR as a hex string and returns the corresponding value. (To convert strings that

require VERSION require EXPR require Demands a version of Perl specified

setprotoent STAYOPEN

q/STRING/

sysopen FILEHANDLE,FILENAME,MODE sysopen FILEHANDLE,FILENAME,MODE,PERMS Opens the file whose filename is

reverse LIST In list context, returns a list value consisting of the elements of LIST in the opposite order. In scalar context, concatenates

format Declare a picture format for use by the write

getprotobynumber NUMBER

warn LIST Prints the value of LIST to STDERR. If the last element of LIST does not end in a newline, it appends the same file/line number

until These flow-control keywords are documented in Compound