tl;dr: Is there any magical way of printing a fully formatted A4 document in Word on half-size A5 paper? In Microsoft Word 2010 or 2013 or any other piece of Windows program. Exactly the same document with adjusted formatting, exactly the same pages count and each page format, only 50% smaller than original and printed on a different piece of paper.
What I need is an automatic and proportional change of margins and font size to 1:1 recreate A4 page in A5 print. The way that each and every page would start and end with exactly the same word as in case of regular A4 printout.
What I am looking for as any way or solution that would allow me to print exactly the same looking A4 document into A5 piece of paper, only 50% smaller than the original one.
I know that I can simply change page size in Word to A5 or even select A5 instead of A4 during print. But this reformats the entire document, causing i.e that I am ending up with twice as big number of pages and with margins and font size not adjusted at all. I need to do any changes or adjustments manually, while I am looking for an automatic solution, if it exists at all. So, that's not what I am asking for.
I am also not asking about opposite solution (i.e. printing two A5 pages into A4 piece of pager) hence this question, as good as this one is not a duplicate of my question.
Is this possible at all?