Best practice to print a form

We have a couple forms with pretty complex structure (i.e. accordion style, multiple grids attached). When I do print preview in browser it’s complete mess.

I wonder what should I use to get a print-able layout for forms including their nested elements?

Technically it possible to change the code of grid, so it will be able to support your requirements, but it will require heavy customization. You can contact sales@dhtmlx.com about customization details.