The Paste command allows you to bring a text/numbers/images from the clipboard and paste them into whatever graphics program you are currently using. In Garment Designer, you may:
Paste text (numbers) into different boxes/fields in the Sloper, Gauge, and other dialog windows.
Paste the graphic image created in Garment Designer and copied to the clipboard, to another program such as Stitch Painter.
Paste the schematic created in Garment Designer and copied to the clipboard into a Word Processor or Paint Program.