set perfectly the rotation point

Hi,
I would like to rotate a pdf generated by another software.
On the bottom left on the design there is a red cross.
I would to rotate all the design with this point as center.
I found the way to set the angke I want to have, but I don't find the solution to set the cross as reference.
On the video I've found, the reference is magnetic so the clic is perfect.

Thanks for the tips.

First: this is the wrong sub forum, this section is for developers to discuss the code and documentation.

Do you really want to rotate a pdf? LibreCAD doesn't open or import a pdf. Maybe you meant a dxf.
If so, what do you mean with the red cross? Is it part of the file/drawing or the 0,0 coordinate marker of LibreCAD?
In the first case you should activate Snap Intersection in the snaps toolbar at the bottom of the screen.
In the second case you can activate Snap on Grid or type 0,0 in the command line to specify the rotating center.

I moved the thread to LibreCAD-User.
@dellus, you can do this too. Just copy the link of the correct sub-forum as target and paste it in the move form.
You should find the move function in the 3-dot-menu of the opening post. All replies are moved too.

Armin

Hi,
Of course it is not a pdf  but a dxf file.

The red cross is the (0,0) and the snap grid works.

Thanks you