In our flow, two or more positions can be equivalent.
O / \ A B / \ C D
In this figure, it should be obvious that the position before C, is the same as the position before B. This is because in flow, the selection of a whole element can be interpreted as the selection of its contents
Equivalence is symmetrical, before C ≈ before B and before B ≈ before C
This procedure is destructive on given positions
Refer to baseFlowUtils for more information on how to import and use this function.
Whether the positions are equivalent