The input file must be named 'install.dat' and be stored at the root directory of the install package. This sentence sets the minimum required space in the destination drive unit. Currently it is not supported. Its purpose is to define values that the user may edit so as to customize the installation. The latter are distinguished because of a leading underscore.
Underscored keys suffer no kind of check.
Separated by a space. Only nonempty directories are copied. Optionally a list of files to be copied is shown. Next, conflicts between existing files and to be installed ones are shown. Confirmation is required to proceed.