I am currently using multicols and would like to organize my columns in a way that some paragraphs can occupy multiple columns. Like as follows
With the red blue and green lines all being different sections of text. I have already looked at flowfram, but this does not solve my problem because it would only works if each page is painstakingly handcrafted pixel by pixel, em by em, or pt by pt. If there is a tool which simply allows me to define the position of my frames and columns in relation to one another, and define the size of my columns with respect to multicol's \columnsize argument, that tool would suffice.