When you look at the reverse side of your printed work, the more you can see the printout through the paper, the more show-through there is.

Print-through is when you can see ink on the reverse side of your sheets.

These aspects are very important when you need to print on both sides, as the more show-through and print-through there is the less clear your work will be.

“…VERY IMPORTANT WHEN YOU NEED TO PRINT ON BOTH SIDES…”