Add additional explanation around support for non-doc comments (#120)

README.md

@@ -102,6 +102,8 @@ Format all .rs files ending with `_test.rs` within the examples directory
 Currently this formatter does not support non-doc comments in code blocks. It uses a fork of prettyplease for formatting rust code, and `prettyplease` does not support this. I would like to not diverge this fork too much (so I can easily keep in sync with upstream), therefore I didn't add non-doc comment support in my prettyplease fork for now.
 This means that you _can_ use non-doc comments throughout your view macro, as long as they don't reside within code blocks.
 
+> A bit more context: `prettyplease` uses `syn` to parse rust syntax. According to https://doc.rust-lang.org/reference/comments.html#non-doc-comments non-doc comments _are interpreted as a form of whitespace_ by the parser; `syn` basically ignores/skips these comments and does not include them in the syntax tree.
+
 ## Pretty-printer algorithm
 
 The pretty-printer is based on Philip Karlton’s Mesa pretty-printer, as described in the appendix to Derek C. Oppen, “Pretty Printing” (1979), Stanford Computer Science Department STAN-CS-79-770, http://i.stanford.edu/pub/cstr/reports/cs/tr/79/770/CS-TR-79-770.pdf.