6) Want to see what does the Medi-Kit to your soldier?Left click on the Medi-Kit screen background to show the injured soldier information on the Control Bar, the text "(injured unit)" is displayed after the soldier name to inform the player.
The injured soldier information are updated each time the Medit-Kit user click on a button (Pain Killer - Morale info, Stimulant - Energy/Stun info, Heal - Health/Fatal Wounds info).
Another click on the Medi-Kit screen background to show back the information of the Medit-Kit user.
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Quoting myself:
Yes, the Control Bar of the injured soldier can be seen by default.
But left click to switch between the Control Bar of Medit-Kit user and wounded soldier can be useful to avoid to quit the Medit-Kit, look at the TUs left, and reopen the Medit-Kit. Sometimes the player forgets how many TUs the Medit-Kit user has left, and he want to save some TUs to move the Medit-Kit user or to perform another action, so it's quicker this way.
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Cut from this thread on demand for better convenience:
https://openxcom.org/forum/index.php?topic=2279.0