A line comment starts with--and is followed by any sequence of characters. A line that contains a comment can’t contain anything other than a comment and whitespace.
Multi-line comments are supported by starting a comment block with{-and ending it with-}.
Comments in Unison aren't actually committed to the Unison codebase. For that reason they're used primarily to annotate code while you're working on it, and not for documentation. If you want to add a comment to a definition that will be persisted in the codebase, use theDocsyntax.
{-
Hi there!
{-
This is a valid comment
-}
Comments will disappear when added to the codebase!
-}A line starting with---and containing no other characters is afold.Any text below the fold is ignored by Unison.