most printers use a .4mm wide nozzle. the layer height is variable. .2mm is the height in this case. as it is a lower resolution but creates objects faster. in this case the resolution is 0.2mm which the height of each layer in the Z direction(up down) while .4 is the X/Y left right front and back resolution. the .2mm is the height of each layer. 1mm at .2mm height means the nozzle will move upwards 5 times to complete that 1mm thick part.