Grid origin, slipping and other grid tips?

Question

I'd love to hear some tips about working with Grid Snapping. (Using CS6 here)
The two major things I'm confused about:
1) How do I set the origin point for the grid?
(Doesn't seem related to the ruler zero origin tool or the artboard tool. Unless I'm being very dense, it's not obvious or intuitive.)
2) Is it me or do items aligned with the grid somehow get unaligned when moving?
(I turn View Grid on and my objects are aligned perfectly on the grid in Wireframe mode. But after moving things around several times, I can't get my objects to snap back to their original position. Pixel Grid turned off & zero sub-divisions, btw.)

Answer 1

Hi Top Ten,
You can't get them back once they go. You now need to edit the css code manually to do the same thing.
For instance if you want divs to sit beside each other you put this in the css for that div:
clear: none;
This css means that div will allow other divs to sit beside it.
Then put in a width in percentages. For example if you have three divs that need to sit beside each other put:
width: 33%;
in each of them. Or maybe:
width: 31%;
margin-right: 2%;
Fortunately in DWCC it is now robust enough for you to do those code changes by hand. My original question in this thread was posed when DW CC fluid grid had just come out and crashed easily. A year later all is well, so you can do those changes in the css code without problems now.
Regards,
Mary