You can choose the directory or folder into which you want to install Vensim. For Windows this defaults to the program files directory (normally c:\Program Files\Vensim). On the Macintosh a Vensim folder will be created on the hard disk. However, you can choose to install Vensim anywhere that you want. When we refer to directories in this Manual they are subdirectories of the directory in which Vensim has been installed.