$MATCH
%^H The %^H hash provides the same scoping semantic as
$] The revision, version, and subversion of the Perl interpreter, represented as a decimal of the form 5.XXXYYY, where XXX is the version /
$FORMAT_FORMFEED
${^TAINT} Reflects if taint mode is on or off. 1 for on (the program was run with -T), 0 for off, -1 when only taint warnings are enabled
$^ The name of the current top-of-page format for the currently selected output channel. The default is the name of the filehandle with
$= The current page length (printable lines) of the currently selected output channel. The default is 60. Mnemonic:
${^MATCH} This is similar to $& ($MATCH
$OUTPUT_FIELD_SEPARATOR
$OLD_PERL_VERSION
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