Working in Stella

Stella Professional uses tools and options you're used to using with other Windows and Macintosh applications, including those listed below:

Click to select an object in the Stella window. The object changes in appearance to indicate that it's selected. For some objects, handles allow you to resize the object. The selected object's properties appear in the Properties panel.
Click and drag after selecting a tool to add and place a new object into the model. Depending on the object, you can size it or connect it to another object as you drag.
Right-click an object or group of selected objects to choose from a menu of commands related to that object or group.
Shift-click an object to add it to or remove it from the selection group.
Drag an object to move it.
Drag an object's handle to resize an object or connect it to another object.
Drag a box around a group of objects to select them. When you release the mouse button, the objects touched by the rectangle will be selected.