Zoom plan centered

[Panexpo]

Hi, I have a question from the very first day I began to use this fabulous programme.
Drawing a plan I was wondering if there was a method to keep centered in the screen the zooming of an object or a line I select, while I zoom it in or out. I'm talking about zooming the plan, not 3D views that work perfectly.
Seems that the selected object/wall/line/measure etc. tent to take a position randomly at the sides of the screen... (left right corners)
I'd expected to have the selected item always in the center of the screen while I zoomed it, not moving at the sides...
Could you explain the "philosophy" of the programme behind this random "behavior"?
Thank you!
Best regards
Raf

[Puybaret]

As explained in this article listing Sweet Home 3D shortcuts, you can zoom in or out centered on mouse cursor in the plan with the mouse wheel while pressing Ctrl key (or cmd under macOS).
But keep in mind that zooming will never enlarge the plan bounds so it may behave a little weirdly at some zoom factors.

[Panexpo]

Great! I use the glide pad and it works perfectly! Good job!
Best regards
Raf