In Emacs I like a feature that allows me to add some comments (using the syntax of the language I am using, being it HTML, LaTeX, Markdown, whatever) with some preferences for the editor for that specific file. I do not know if that exists for Sublime, but it would be cool.
Anyway, I would love to have spell checking on the fly when writing texts (say, LaTeX, for instance). But it gets boring to set it on each time. And, yet more boring, change the dictionary to use, as I usually write documents in Portuguese and some other in English.
Ideas on how to overcome these issues with Sublime 3?