What buttons does the Model tab bar have?
Beside the general buttons, the Model tab bar provides the following buttons.

Check diagram: Starts the selected semantic check for the current model or the selected objects.

Layout: Automatically creates a new layout for the model.

Horizontal space: Inserts space in your model from left to right.

Vertical space: Inserts space in your model from top to bottom.

Export graphic: Exports the graphic of the model to your download area.

Connection properties: Determines the bridge height and rounding intensity of connections.

Modeling area: Enables or disables Smart Modeling, enables or disables Guided Modeling, uses or hides the grid in the modeling areas, and sets the grid width.

Background color: Changes the background color of an open model.

Apply template: Provides the available model templates for selection.
See also
What are tab bars for?