Nothing you print by hand reaches the printer until you have seen it. 🖨 Print bill, 🖨 Paper copy, the Z-report, a test ticket: each opens the paper on screen exactly as it will print, decoded from the same bytes. Tap Print to send it, or close the sheet to send nothing.
Kitchen tickets on Send are the exception. They print automatically; that is not "hitting print".
Related: The bill, then the receipt · Print the Z-report