Wave lab basic editing question

I am trying to add some blank on each side of a song very easily .
I added 10sec before the start and after the song. How can I "commit " and process the file to been ONE file (without the maker you see on the picture. like recreating a new file or I should say process my edit (working in a montage) (without applying like a 0db process/don’t like doing that)
thanks !

Simply save the file. The markers you mention are for history. You can hide them if you like.

thanks !