When we first learn to weave we usually are taught to tie up our treadles from left to right just as they are written in a typical draft.
Traditionally, you would set up the treadles from left to right as they are written in the tieup:
Treadle 1 2 Center 3 4
Lifting 12 23 34 41
Foot --Left-- --Right--
To weave this pattern, you would use your left foot to weave treadle 1 followed by treadle 2, then switch to your right foot to weave treadles 3 followed by treadle 4.
Walking the treadles is a much more comfortable, ergonomic alternative to this. The treadles still lift the same harnesses in the same order in order to get the same pattern. The difference is that the treadles under the loom are not tied up from left to right. They are tied up so that you can “walk” the treadles left-right-left-right from the center out. Your odd numbered treadles will be on the left, even on the right.
Advantages to walking the treadles:
I have been happily weaving since my son was born in 1988.