what's the name of this feature?

When you start typing in a URL and you see it filtering through the words from the first letter, what is this feature called please? Reason I'm asking is, my music software has a Search function which when I start typing, from the very first letter, I will see the first letter of every song in my Music Library, then the more letters I type, it will continue filtering through the words. When you start typing a URL to go on the net, this works the same way, from the first letter, you will see all of the options or web addresses that you've visited before so you don't have to type the entire URL, you can simply select the correct URL as soon as you see it when typing the letters.

My music library has a "Text" box where I will have to type in the entire name of any of my music categories then hit the Enter key to display that specific category, I wish to get a utility or something that will start filtering through all of my categories when I start typing in that text box but don't know exactly what to look for, any ideas please? Thanks.

 

Those are generally called autocomplete boxes or something similar. Visual Studio calls it Intellisense.

 

Yeah, I found out a couple of day ago that is it called autocomplete, sorry I did not remember to post the info here and thanks!