This process will convert tabs to spaces, which is fully compatible for viewing in NetLinx Studio.
NetLinx Studio uses a mix of tabs and spaces for whitespace by default, which can make NetLinx source code files look terrible in other text editors. If you are opening a file created in NetLinx Studio, or otherwise notice that the line indentation does not look correct, run the NetLinx: Fix Indentation command from the Sublime Text command palette (Ctrl + Shift + P).
If a NetLinx programmer used a nonstandard tab width, this command probably won't work. In that case, you will have to try selecting various tab widths in Sublime Text and running the Indentation: Convert To Spaces command. If all tabs are correctly converted to spaces and there are still indentation problems, try Indentation: Reindent Lines.