This is the most important tool in iCalamus. Whenever you want to edit an object, a frame, a group, or a guide, you will have to activate it first. Therefore you use this tool.
To resize or move a selected frame, move the mouse cursor into the frame. The cursor changes in order to show you the options.
You can also directly copy one or more frames using this selection tool. Choose the frame (or frames while pressing [Shift]). If you move them to another position while pressing the [Option] key, the frames will be copied when you release the mouse button. The mouse cursor shows the copy mode by changing its form: