Get info on a relevant file by using command - I. (this is an eye, not an el )
In the open with section you can set what program you want to use to open the file by using the drop down menu.
In this section you can also set change all, which means that all files with the extension will be opened with the program you choose (you should get a warning asking if you want to do this)
Comments
In the open with section you can set what program you want to use to open the file by using the drop down menu.
In this section you can also set change all, which means that all files with the extension will be opened with the program you choose (you should get a warning asking if you want to do this)