Optional package information files

The four optional package information files that you can add to your package are:

compver(F)

defines previous versions of the package that are compatible with this version

depend(F)

defines any software dependencies associated with this package

space(F)

defines disk space requirements for the target environment beyond that used by objects defined in the prototype(F) file (for example, files that will be dynamically created at installation time)

copyright(F)

defines the text for a copyright message that will be printed on the terminal at the time of package installation or removal

Every package information file used must have an entry in the prototype file. All of these files are described further in ``The package information files'' and on their respective manual pages.