A macro that fits a curve over a series of lines passing through their end-points.
Quickly written hence has several rules to follow:
1. Select only lines, anything else is prohibited.
2. Lines should be picked in one go, preferably using directional fence selection. Cannot be picked in batches, especially in an uneven pattern like beginning few, last few and then middle ones - order is important
Below is a video:
Not sure if addresses this post, but could be useful.