Hopefully, he has--cough--written paragraphs that are easy to delete, not easy to modify. Ha. Ha. Ha.
But seriously, this general idea strikes me as being applicable to writing words as well. Write in such a decoupled way that it is relatively easy to excise paragraphs and sections without destroying the rest of the piece.
That may introduce a small amount of redundancy, but it also makes it easy to read in smaller chunks, reorder, or remove outright rather than edit portions that no longer fit.