@- $-[0] is the offset of the start of the last successful match

$[ This variable stores the index of the first element in an array, and of the first character in a substring. The default is 0, but you could

%+ Similar to @+ , the %+ hash allows

$> The effective uid of this process. For example: $<

$^H WARNING: This variable is strictly for internal use only. Its availability, behavior, and contents are subject to change without notice

ARGVOUT The special filehandle that points to the currently open output file when doing edit-in-place processing with -i. Useful when

$^N The text matched by the used group most-recently closed (i.e. the group with the rightmost closing parenthesis) of the last successful

$MATCH

$] The revision, version, and subversion of the Perl interpreter, represented as a decimal of the form 5.XXXYYY, where XXX is the version /

${^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