For example, when working on sketches with many lines and thus intersection points, it can help to temporarily disable the snapping at these points, may be if you want to start another line very close.

To do this, use the shortcut that you specified under Do not snap to intersections [No snapping to intersection points].

Sketcher with snap at intersection point

PARTdesigner -> Tools [Extras] menu -> Settings [Settings...]... -> Sketcher (hist.) [Sketcher (feat.)] -> Grid -> Do not snap to intersections [No snapping to intersection points]