Suppose you want to move a component 10mm in a certain direction.
Hit command-M and and select the component with the cursor.
Then you click on the arrow of the cursor's axes that corresponds to the direction of the desired move.
It turns blue.
You then look to the dialogue box.
You'd like to enter a numerical "10mm" directly.
But is it X, or Y or Z ?
I usually have no idea.
In order to find out I drag the blue arrow a bit and see which of X, Y or Z changes. Then enter the intended number directly in that box.
Not very efficient.
SUGGESTION: when one of the cursor arrows is BLUE then the corresponding X, Y or Z box in the Move dialogue should also be BLUE.
