A three-button mouse consists of a left mouse button, a middle-mouse button (also called the scroll wheel) and a right-mouse button. The following is an overview of the different mouse operations commonly performed in SketchUp with a three-button mouse:
- Click - A click refers to the user quickly pressing the releasing the left-mouse button.
- Click and hold - A click and hold refers to the user pressing and holding down the left-mouse button.
- Click, hold, drag - A click, hold, drag operation refers to the user pressing and holding down the left-mouse button and then moving the cursor.
- Middle click, hold, drag - A middle click, hold, drag operation refers to the user pressing and holding down the middle-mouse button and them moving the cursor.
- Scroll - A scroll refers to a user spinning the middle mouse wheel.
- Context-click - A context-click refers to pressing and holding the right-mouse button. Context-clicks are usually used to display context menus. Context menus are menus whose contents vary depending on the context in which they are invoked (usually on one or more entities in the drawing area or within a component, such as a dialog box). The following image shows a context menu for a Face entity.

The following is an overview of the different mouse operations commonly performed in SketchUp with a one-button mouse:
- Click - A click refers to the user quickly pressing the releasing the mouse button.
- Click and hold - A click and hold refers to the user pressing and holding down the mouse button.
- Click, hold, drag - A click, hold, drag operation refers to the user pressing and holding down the mouse button and then moving the cursor.
- Scroll - A scroll refers to a user spinning the mouse ball (found on some Mac computers).
- Context-click - A context-click refers to pressing and holding the control key while simultanously pressing clicking the mouse button. Context-clicks are usually used to display context menus. Context menus are menus whose contents vary depending on the context in which they are invoked (usually on one or more entities in the drawing area or within a component, such as a dialog box)..
