Method for installing a file on demand using a preview

摘要

Installing for use with a computer a file on demand using a preview file. A feature of a program is represented by a preview file and a feature file. The feature file contains all the components necessary to support the feature. The preview file contains a subset of the feature file. Only the preview file is initially installed. The preview file may be used to preview and select the feature. If the feature is selected, then the feature file is installed and the preview file is deleted.