- mask number is an integer number - alway bug comes up. - exhaustive - never finishes - local works but depends on the initial orientation - exhaustive + local — nope - fast fourier - works best - my walk around - to make the smallest box size possible and add a mask. But then after Fourier - the density of mask appears on the corners - also will be good if the program could recognise the handiness of 2 structures - about accuracy - sometimes it is very hard to align 2 maps when they a) have big box size and b) oriented way differently in space
