OPEN / OPEN AS.

Opening a file is simple with ASTRO. Simply touch the file quickly and if there is a default application associated to open that file it will simply open.

If there is no default application set, it will give you a choice of applications installed able to open that application. Choose the app you want to use and it will open.

To Open As, long press the file you want to open > choose Open As > Choose selection from the Open As list.