Within (1) there are options, as presented by Haskell (the offside rule) and Haml (you must indent exactly to _here_, no more, no less). The latter is nuts ("s

Within (1) there are options, as presented by Haskell (the offside rule) and Haml (you must indent exactly to _here_, no more, no less). The latter is nuts ("significant dementation", one might say. :) ). Plus some languages, such as Haskell, allow for both braces and significant indentation, with the language culture encouraging responsible usage.