$FORMAT_LINES_PER_PAGE

IO::Handle->format_line_break_characters EXPR

$EXECUTABLE_NAME

$^P The internal variable for debugging support. The meanings of the various bits are subject to change, but currently indicate:

$& The string matched by the last successful pattern match (not counting any matches hidden within a BLOCK or

HANDLE->format_lines_per_page(EXPR)

$EVAL_ERROR

$REAL_GROUP_ID

IO::Handle->input_record_separator( EXPR )

$EGID