If like me you don't know what therbligs meant, it's a list of 18 motions: https://en.m.wikipedia.org/wiki/Therblig#:~:text=Therbligs%20are%2018%20kinds%20of,la

If like me you don't know what therbligs meant, it's a list of 18 motions: https://en.m.wikipedia.org/wiki/Therblig#:~:text=Therbligs%20are%2018%20kinds%20of,labour%20by%20eliminating%20unneeded%20movements https://en.m.wikipedia.org/wiki/Therblig#:~:text=Therbligs%2....