if (exists $get{v}) {
# show characters for inverted mnemonics (vim alternatives)
$di->{ substr($_, 1, 1) . substr($_, 0, 1) } ||=
if (exists $get{v}) {
# show characters for inverted mnemonics (vim alternatives)
$di->{ substr($_, 1, 1) . substr($_, 0, 1) } ||=