Searches for unfamiliar special characters should work. Single-character operators and syntactic sugar are one of the harder things to google for, and consequently, a big advantage of a purpose made language reference tool like you've made.<p><i></i>A simple solution:<i></i><p><pre><code> ? -> Optionals
?? -> nil coalescing
! -> Implicitly Unwrapped Optionals
<> -> Generics
as? -> type casting
</code></pre>
…and so on<p><i></i>A Better solution:<i></i><p>provide a wikipedia-like disambiguation section for special characters (since `!` could be Implicitly unwrapped optionals, Forced unwrapping, or boolean negation)