Cut loop to two equal parts...

[Dimitri]

Mark the whole concept is much more easy than the things you imagined (as far as I did understand from what you said). It is just about cutting a line into two equal parts... nothing more. The same thing we do when we select and cut to two halves a single edge. The only difference is that this time instead of cutting to two halves a single edge we are cutting a whole line to two equal parts. It is a command for the 'edges' mode. The idea is very easily perceptible in the image below.

It is a tool which its aim is to cut only the open ended loops, as it is evident (a tool for cutting lines in fact -the term 'loop' is used for closed lines in general-).

The thing that the command has to do is to calculate how long the selected line is and produce a vertice in the middle, exactly, of it.

The reason that such a tool is need is because it is impossible to find precisely the middle point of a line by sight, so that someone may produce a vertice on it.