 A common way of handling this situation is quoting input, or uncompressible parts of the input in the output, minimizing the compression overhead.For example, the zip data format specifies the 'compression method' of 'Stored' for input files that have been copied into the archive verbatim.Mark Nelson, in response to claims of magic compression algorithms appearing in comp.compression, has constructed a 415,241 byte binary file of highly entropic content, and issued a public challenge of $100 to anyone to write a program that, together with its input, would be smaller than his provided binary data yet be able to reconstitute it without error.