Reference Cinema 4D Cinema 4D Prime Select Menu Main selection tools
Function available in CINEMA 4D Prime, Visualize, Broadcast, Studio & BodyPaint 3D

Rectangle Selection

Options Modeling Axis Object Axis Soft Selection

Rectangle Selection

This tool enables you to select points, edges or polygons by dragging a frame over the elements.

Tip:
BodyPaint 3D UV Rectangle Selection can be found here.