Hi Menion,
you can call it "snap to nearest point" or something else...

The important thing to me is ... how to get fastly the basic information of the track? I'm not interested in twiddling with the cross oder snap something like in a adventure game...
New idea (instead of snapping something):
a new button "basic track / position info" (
i) for the right panel displays the diagram
and the basic info of the track like this:
see attachement.
so we have all the basic information about the track and the position on the track = "distance went | distance to go | altitude | altitude difference still to go"
That would be a great support for getting the needed info instantly.
Any recommendations?
Ahoi,
Christian
addition: i use Locus pro for mountainbiking. A quick single tap for basic info during cycling / rolling is desired ...