BeamPrototype start, ending, head, tail missing descriptions

[evildogbot100]

Hello, It seems that the documentation on prototype/beam can be elaborated a little bit. A simple explanation on how beams with head and tail segments actually behaves would be nice. From my tests it seems that every around 64 unit length, a single segment has to be drawn, and if the source image is longer than 64 pixel, it will be squished to fit the 64 pixel. Nowhere is this behavior explained in the wiki. Also, explanation on start/end of the beam would be nice as well.

[curiosity]

https://wiki.factorio.com/Prototype/Beam - what is the difference between start/ending and head/tail?