When slides are published to a library, they are converted to individual files. Each slide gets a unique file name and is identified by a range of factors or properties — including a thumbnail representation, the name of the presentation it came from, and a description of its content, which is based on the slide title.
You can use this information to do things like search for the slide you want and sort the slides. And as the animation shows, you can alter how a slide is identified by changing its properties. Click Play to get a feel for how the library looks and behaves.