It is clear that e-mail is spreading rapidly ... s. Many letters also now contain an e-mail address.
Note here that whilst test problems can be (and often are) distributed by floppy disk, the method is time-consuming for the distributor (copying to disk the required files), expensive (cost of disks and postage) and slow (often taking weeks between the request being sent and the test problems being received). By contrast, distributing test problems via e-mail can be highly automated, is usually free to the users (as costs are met centrally) and is relatively quick.
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