I'll explain: I wanted to be able to use a combination of keys pressed for a specific key. This is useful for games that requires diagonal movements. For example, Kroz has a very weird way of controls. The controls are...
U I O
J K
M N ,
I can't just simply press, for example, I & J to move to the upper-left, I had to press U. I noticed dosbox as a key mapper that'll assign keys to a specific key. What I wanted to do, in this case the U, that I wanted to trigger the event if I pressed two keys at the same time. (Up and Left on the directional keyboard)

Is that possible?