Just discovered the spell_check option which works fine if I enable it in my user preferences.
But if I add it to my project settings or a language settings file (Markdown.sublime-settings) it doesn't appear to work.
I have word_wrap set there and it seems to work. Are only certain setting permitted outside of the general preferences? I was under the assumption there was a cascade of settings and the last one set won?
I'd like to enable it when writing Markdown (need all the spelling help I can get for blog posts) but disable it when working on code.