Alignment lines are off

[Windjamer]

On one of my web designs lines appear, illustrating when edges and centres align. On another, these do not show. How do I turn this aid off & on? I've looked through the manual at length but am unable to find it.

[handrawn]

is it the magnet symbol 'snap to objects' on the top bar ?

[Windjamer]

is it the magnet symbol 'snap to objects' on the top bar ?

Thank you, handrawn. That was easy (for you). Much appreciated.

[handrawn]

you are welcome

everything is easy when you know how, and difficult when yoiu don't..