About selecting

To be able to alter a component in the drawing area, it has to be selected first. When a component is selected, its yellow snap points are visible and the component is surrounded by a cyan square (see Figure 1 below). A component is automatically selected when it is placed in the drawing area.

>> Learn more about different colors when selecting components

Figure 1: A selected component with visible yellow snap points in the 2D and 3D views.

There are different options how to select components:

Select a component by clicking it.
Select a group of components by holding the Ctrl key while clicking the components.
Use the Select single object tool.
Use the Select all objects in a group tool.
Use the Select rectangle tool.
Use the Lasso tool.
Use the Inverse selecting feature.

Note:

You can also select a single component in a group by disconnect the component from the group. Read more in Disconnecting components for more information.
You can also press Ctrl + A to select all components in the drawing area.
You can regret a selection by clicking somewhere else in the drawing area, clicking on another component, or by placing a new component in the drawing area.
To move several selected components simultaneously, use the arrow keys.