What does: 'Word is preparing to background print the document' message mean?

G'day LHG ,

You can keep on typing whilst Word starts to nicely render the
document ready for the printer, initialize drivers, allocate buffer
space for same and so on.

Steve Hudson - Word Heretic

steve from wordheretic.com (Email replies require payment)
Without prejudice


LHG reckoned:

What does: 'Word is preparing to background print the document' message mean?