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Each line of the file specifies a previous version of the associated package with which the current version is backward compatible.
Since some packages may require installation of a specific version of another software package, compatibility information is extremely crucial. Consider, for example, a package called ``A'' which requires version ``1.0'' of application ``B'' as a prerequisite for installation. If the customer installing ``A'' has a newer version of ``B'' (1.3), the compver file for ``B'' must indicate that ``1.3'' is compatible with version ``1.0'' in order for the customer to install package ``A.''
Version 1.3 Version 1.0