HANDLE->format_lines_per_page(EXPR)

$REAL_USER_ID

$OSNAME

$EXECUTABLE_NAME

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

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

HANDLE->autoflush( EXPR )

$FORMAT_LINES_PER_PAGE

$| If set to nonzero, forces a flush right away and after every write or print on the currently selected output channel. Default is 0 (regardless

IO::Handle->input_record_separator( EXPR )