Create a single edge from edges within the error limit. The error is the allowed error criterion that determines whether the edges are connected. For example when the distance between the edges is 2.0e-006, although the value is not zero, it can be made into a single edge by setting the error as 0.0001 (distance larger that the value between edges).

After the operation, the selected edges are removed and only a single joined edge remains.

Join line and wire

Join line and wire are both ways to join multiple edges into a single line. The middle points used to create the edges are removed but for join line, but not for wire. So if the small points can be ignored, it is best to use the join line function. If not, it is best to use the create wire function.