I think there is an option to view the printable margins... All it is is that on a page (or two) the widht is wider than can safely be printed. Or too tall.

Hmm cannot actually find it. Sorry.

ms help
When I print my document, some of the text is cut off.

Most printers require a minimum width for margin settings, since they can't print to the edge of the page. If you try to set margins that are too narrow, Microsoft Word displays the message "One or more margins are set outside the printable area of the page." To prevent text from being cut off, click Fix to automatically increase the margin width. If you ignore the message and try to print the document, Word displays another message asking whether you want to continue.

You can also set the margins manually by using the ruler or the Margins tab (File menu, Page Setup command). Keep in mind that the minimum margin settings depend on your printer, printer driver, and paper size. To determine the minimum margin settings, check your printer manual.
Useful eh? (not)