Telling from the number of recent implementations, Literate Programming enjoys a bigger following than I had expected. Here is my implementation of a similar to

Telling from the number of recent implementations, Literate Programming enjoys a bigger following than I had expected. Here is my implementation of a similar tool in OCaml: https://github.com/lindig/lipsum https://github.com/lindig/lipsum. I have some projects using it on GitHub like https://github.com/lindig/ocaml-hyphenate https://github.com/lindig/ocaml-hyphenate, which implements Knuth's algorithm for hyphenation. The README is basically the literate program of the project. Question for the author: Are the spaces around `<<`, `>>`, and `>>=` mandatory?