The following values are used to describe the pattern used for MUSE datacubes:
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string   	N_input  derotator aligned 	offsets	description
		 	 ?	   to RA/DEC?
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ROTATE2  	2        YES	    YES		small	angles 0,90 or 0,180 or similar 
ROTATE3  	3        YES	    YES         small	0,90,180 or similar
ROTATE4  	4        YES	    YES	        small	0,90,180,270 or similar

ROTATE2_custom	2	 YES	    NO		small	same as above but aligned to object axis
 etc.

DEEP<n>  	<n>	 NO	    YES/NO	small	no rotation between frames

MAP<n>   	<n>      YES/NO	    NO		large	large offsets between sets of frames (often pairs)
any N>4 datacube is classified 'MAP<n>' for simplicity (disregarding offsets and rotation angles).