In v2.5, the same CANCEL button is used to close various windows on the Geoscape.
Perhaps this request could apply to v2.6 as well?

'''Aircraft window''' (when you select a PHALANX craft)
Current button is CANCEL
Suggested button is CLOSE or CONTINUE (as in KEEP ON FLYING)
Reason: player doesn't cancel any action because selecting the craft is the only way to manually control it. The button is only to close the window when no automatic task is chosen, and player wish to route the craft manually.


'''Anti-UFO Defense window''' (when you select an alien craft)
Current button is CANCEL
No suggestion
Reason: in this case, the Close window button really cancels the interception order.


'''Ready window''' (when a transport is ready to land)
Current button is CANCEL
Suggested button is DELAY or WAIT
Reason: the transports doesn't cancel the mission and returns to base. It merely hovers on the spot, waiting for the day to come for instance, or another mission to be played elsewhere. So then mission is only postponed, until the craft is either reselected or runs out of fuel.


'''New installation window''' (radar tower, etc.)
Current button is CLOSE
Suggested button is CANCEL
Reason: player really cancels an initial installation build order.

In ufoai.po,
"Cancel" is #1320
"Close" is #1403
"Wait" and "Continue" don't exist.