Archiving
An electronic archive can store PPML documents efficiently. Each individual data element only needs to be stored once. The rest of the PPML based archive consists mainly of structure descriptions. This is very different from an electronic archive based on TIFF or PDF, in which every document contains all the page elements and the company logo may have been stored a million times. This also applies to the standard end to a letter, for the standard terms of payment or the standard policy conditions; there may be millions of copies stored. Each resource is probably no larger in size than a few Kb. But with multiple copies the size increases quickly, especially when color has entered into the electronic company communication.
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