HP LaserJet 3100 All-in-One Printer series - Manual (Page 273)

272 Glossary EN
An industry-standard for scanners and software. Using a TWAIN-
compliant scanner with a TWAIN-compliant program, you can initiate
a scan from within the program.
viewer
A program that allows someone who does not have the JetSuite
software to view a JetSuite document. The Viewer does not allow
someone to change the document.
zoom in
To make a page larger on the screen so you can see more detail.
zoom out
To make a page smaller on the screen so you can have a broader
view of the page.