"Claude Hopper" wrote in message
...
William Sommerwerck wrote:

It's so your food will cook more evenly. Many directions are to
microwave for a few minutes, open and stir contents, then
continue a few more minutes. It's more thorough to run the food
past the microwaves in both directions.

No, it's not. It shouldn't make any difference, as the food is subjected
to the same "pattern" regardless of which way the table turns.
My guess is that it's to even out the wear.

Is that the offical dummy version?

Yes. I found it in "The Big Dummy's Guide to Servicing Microwave Ovens".