$> The effective uid of this process. For example: $<
${^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
$b Special package variables when using sort()
${^MATCH} This is similar to $& ($MATCH
$DEBUGGING
$INPLACE_EDIT
$MATCH
$^H WARNING: This variable is strictly for internal use only. Its availability, behavior, and contents are subject to change without notice
$OLD_PERL_VERSION
@+ This array holds the offsets of the ends of the last successful submatches in the currently active dynamic scope.
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