The USGS released an updated version of ModelMuse . ModelMuse compiled for Microsoft Windows with example models and supplementary materials. Users are encouraged to read the documents that are provided in the 'doc' directory of this software distribution, including the 'Release.chm' file. The recommended method of installing ModelMuse is with the installer. However, if there is difficulty in using the installer, ModelMuse can be installed by unzipping the zip file. The installer associates the extensions .gpt, .gpb and .mmZLib with ModelMuse. If the zip file is used instead of the installer, the user may wish to make those associations manually.