Final answer:
The 'Copy command' used with a 'crossing window' in CAD programs selects all objects within or touching the green selection box made by dragging to the left.
Step-by-step explanation:
When the Copy command is used with a crossing window in a computer-aided design (CAD) program, this typically refers to selecting objects within a certain boundary that is defined by dragging the mouse cursor to the left, which creates a green selection box.
Unlike a regular window selection, where only objects entirely within the boundary are selected, the crossing window will select all objects that are either entirely within the boundary or crossing the boundary line.
When the Copy command is used with a crossing window by dragging to the left or creating a green box, it selects objects that are completely or partially enclosed by the window.
Therefore, any object that touches the green box will be included in the selection for the copy operation.