|This function is protected, and cannot be called from insecure code while in in combat.
Places an action onto the cursor.
- Numeric - The action slot to pick the action up from.
- If the slot is empty, nothing happens, otherwise the action from the slot is placed on the cursor, and the slot is filled with whatever action was currently being drag-and-dropped (The slot is emptied if the cursor was empty).
- If you wish to empty the cursor without putting the item into another slot, try ClearCursor.