In TARGET I use the following for a closeup view of left MFD, right MFD and HUD:
DCS A10C.tmh:
define CloseUpHud CHAIN(DOWN+KP0, KP5)
define CloseUpLeftMfd CHAIN(DOWN+KP0, KP1)
define CloseUpRightMfd CHAIN(DOWN+KP0, KP3)
define CloseUpReset UP+KP0
DCS A10C.tmc:
MapKeyIO(&HCougar, H3U, CloseUpHud, DMS_Up);
MapKeyIO(&HCougar, H3D, CloseUpReset, DMS_Down);
MapKeyIO(&HCougar, H3L, CloseUpLeftMfd, DMS_Left);
MapKeyIO(&HCougar, H3R, CloseUpRightMfd, DMS_Right);