[This is preliminary documentation and subject to change.]
The SOURCELIST property is a semicolon delimited list of network or URL source paths that are added to each user's source list for that product.
The SOURCELIST property can be set at the command line or in the Property table.
During the installation of a feature or product, the installer searches the source list for a valid path to the installation package. The author of an installation package uses the SOURCELIST property to extend the list of potential source paths that are searched.
During every installation the installer will check to see if the property is set. If the SOURCELIST property is not set, then the installer will use the existing source list.
Sources added using the SOURCELIST property are added directly to the end of the list for each type of source and always come after the default source specified by the SOURCEDIR property.