Immediate selection is a method of selecting vertices to make them available for weighting in one operation.

To select a vertex:

Click the vertex.

To select a group of vertices:

Click-drag across a group of vertices in the Viewer window.

To deselect a vertex:

Middle-click the vertex.

To deselect a group of vertices:

Middle-click and drag to create a deselection area.

To deselect all vertices:

Double-click an empty location in the Viewer window.

To reverse the selection of a vertex:

Right-click the vertex.

To reverse the selection of a group of vertices:

Right-click and drag over a group of vertices to create a selected area.

For more information, see Skin, Adjusting the weighting of vertices, and Selecting and preselecting vertices.