Use Cut to remove the whole embroidery or the currently selected block of stitches from the embroidery and make it the Clipboard Block.
Use one of the block selection methods (Box Select, Color Block Select, Freehand Select, Point Select or Select All Visible) to select the desired block to be cut. It can then be pasted into the same or another embroidery, or pasted into another mySewnet™ Embroidery Software module.
Shortcuts
Clipboard, Home Tab:
Keys: Ctrl + X; Alt, H, CU