An additional advantage of the digital library is that because the digital information can be viewed and copied without access to the original document, it prevents wear and tear on library materials. This is particularly important when the original is valuable or fragile. The digital library, however, is not primarily concerned with preserving the original document because digitization changes the format of the document and the digital form itself may be difficult to preserve.

An additional advantage of the digital library is that because the digital information can be viewed and copied without access to the original document, it prevents wear and tear on library materials. This is particularly important when the original is valuable or fragile. The digital library, however, is not primarily concerned with preserving the original document because digitization changes the format of the document and the digital form itself may be difficult to preserve.

An additional advantage of the digital library is that because the digital information can be viewed and copied without access to the original document, it prevents wear and tear on library materials. This is particularly important when the original is valuable or fragile. The digital library, however, is not primarily concerned with preserving the original document because digitization changes the format of the document and the digital form itself may be difficult to preserve.