Sublime Text 3, convert spaces to tabs

Question

I know there are a lot of posts about this, but I couldn´t get it to work.
I use tabs for coding. Is there a way, to convert always spaces to tabs? I.e. on open and on S

Answer 1

On the bottom right-hand corner of your Sublime Text window, you'll see an indentation indicator that looks a lot like this:

Clicking it will open a menu with options to adjust your indentation preferences, and more importantly, Convert Indentation to Tabs/Spaces.

The same menu is listed under View -> Indentation.