Keeping a digital collection usable involves more than saving the original files in one place. Changing soft creates prac difficulties bec older for sometimes req special to that la systems can easily pro without addit planning and continuing technical support. A file can survive while the ability to open or interpret it disappears. Curators may therefore keep documentation, maintain suitable software, or convert material into another format. Each approach involves choices about what must be preserved. Planning for future access begins by identifying the features that give the material its value.

Type only the missing letters. Each box is one letter, and the number of boxes matches the letters that are missing.