In Common Lisp there's a special syntax to make the reader ignore an expression, for example #+feature(code here) is executed only if feature is present. It's c

In Common Lisp there's a special syntax to make the reader ignore an expression, for example #+feature(code here) is executed only if feature is present. It's common to see code commented out with "#+(and)(code here)" or "#-(or)(code here)". In fact there are proponents for either one of these idioms. I guess in Algol-style languages it's rarer to see code commented out like that?