It seems lndesign doesn't automatically continue a layout to subsequent page pairs when your typing in one column wraps to the next page. I was told I could script this, and since I have done JS scripting on web pages for a while, it should not be too hard, hopefully, if I explain the layout here?
The layout is simple -- 4 parallel columns spread across 2 facing pages -- each column will hold a separate text than the other 3, and these texts will NOT be pasted in -- they will be created AS I type. I can't find a word processor to do this, because none can wrap a column from one even page number to the next even page number (not the next odd page number). Yet if you think about the layout in the finished printed book, it is very obvious -- you want the two texts on the left page to always stay on the left, and the two on the right to stay on the right, no matter which page of the book you turn to.
So technically, column 1 of the even page 2 will wrap down to column 1 of page 4. Column 2 of the even page will also wrap down to page 4. Similarly, both the 2 right columns of the right (odd) page will always wrap down to the next odd page. All I need is for this to happen automatically as I type. So, whatever column I am typing into, when I reach the end of that column on the current page, the same layout will be created for the next page pair on the fly. So you just keep typing, and when ANY column hits the end of that page, a new page-pair layout will be created if it doesn't already exist.
This avoides page frame linking repetitively across hundreds of pages, which is an ongoing hassle that will detract from my concentration on the book's content. I want the layout to simply keep going in the background for as long as I type. Simple requirement -- can it be done in Javascript?