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Sorting:
M to sort by memory usage
P to sort by CPU usage
N to sort by process ID
T to sort by the running time

V to see the child-parent hierarchy of processes

u to list processes from a certain user, then type user name

Multiple times t then multiple times ‘m’ to change the style of the CPU and memory

F to change the Fields Management screen, eg. column1 -> cpu, column2 -> mem, then press V to see their usage