Preview button needed on desktop Mac

I bought both the mobile and desktop version, I'm currently using a MacBook Pro and noticed that the desktop version doesn't have the goggle or spectacle icon to preview the code result. I also noticed there isn't any button to run the code in the menu bar either. This would greatly satisfy customer opinion.

I'm coming form windows 10 and used to use Notepad ++, some of my favorite things was I could drag a tab inside the same window and split the window, that would be a great function here. Allowing more versatile workflows would be beneficial to the user.