[Inkscape-user] Snap to objects?

Hi Inkers,

is there any way to make objects snap to each other in inkscape? E.g. when I move a square close to another one, the corners would get magnetic.

Or when I want to draw a vertical between two parallel lines the start and the end of the vertical should snap to the parallels.

I have found nothing in the settings and using guides can not always be an suitable substitute. And usualy I can't work with grids, for I'm working with scans of hand drawings which I "vectorize".

TIA for info!

Cheerz Lars