Sweet Home 3D Icon    Editing preferences
 

To edit Sweet Home 3D preferences, choose Sweet Home 3D > Preferences... under Mac OS X or File > Preferences... under other systems.

In the preferences pane, you can choose the Language used in Sweet Home 3D user interface and the Unit used to draw the rulers and grid of the home plan, and to display lengths and areas.
The Magnetism check box enables or disables the magnetism used in the home plan during walls drawing and furniture placing.
The Rulers check box allows to make the rulers around the plan visible or invisible.
The Grid check box allows to make the grid in the plan visible or invisible.
The New walls thickness value sets the thickness of all the walls that will be created once the preferences pane will be closed.
The New walls height value sets the height of all the walls that will be created once the preferences pane will be closed.

Finally, the Reset the display of tips button resets the answers you gave to the check box Do not display this tip again shown in the tips dialog boxes displayed when you click on some tools. This means that all the dialog boxes where you selected this check box will appear again.

Preferences are shared by all Sweet Home 3D windows. Therefore, editing preferences will have an effect on all opened windows.

Magnetism set in preferences pane can be temporarily toggled in the home plan, by pressing the shift key.

Once a wall is created, you may change its thickness and its height whatever the values you set in preferences pane.