$% The current page number of the currently selected output channel. Mnemonic:

${^WARNING_BITS} The current set of warning checks enabled by the

$ACCUMULATOR

$ARGV Contains the name of the current file when reading from <> .

%LAST_PAREN_MATCH

$? The status returned by the last pipe close, backtick (`` ) command, successful call to

$! When referenced, $! retrieves the current value of the C

$^L What formats output as a form feed. The default is \f . You

%INC The hash %INC contains entries for each filename included via the

$+ The text matched by the last bracket of the last successful search pattern. This is useful if you don't know which one of a set of alternative