Added in 4.3
$keylparam
Returns the "https://docs.microsoft.com/en-us/windows/win32/learnwin32/writing-the-window-procedure":lParam value for the key(s) during On_KEYDOWN and on KEYUP events.
Example
on *:KEYDOWN:*:*:echo -sg lParam is $keylparam on *:KEYUP:*:*:echo -sg lParam is $keylparam