Apparatus, systems, and methods may operate to determine a substantially perpendicular current distance from a cursor guide line that passes through a given current cursor location, to a reference point. Additional activity may include determining candidate guide lines that comprise a subset of a larger group of guide lines and that are associated with at least one drawing object, each one of the subset having a substantially perpendicular reference distance to the reference point that is within a range defined by a snapping tolerance and the current distance. A snapping location can be displayed on the closest one of the subset as measured from the current cursor location. Additional apparatus, systems, and methods are disclosed.