Preference files always begins with the *Id() statement followed by statements grouped in blocks. Each block begins with a *Begin statement, such as *BeginDefaults(), *BeginPlotDefaults(), or *BeginDefinitions(), and ends with a corresponding *End statement, such as *EndDefaults().
The five principal blocks in the preference file are:
The *BeginDefaults() block is unique to a preference file while the *BeginDefintions(), *BeginStatsTemplates(), *BeginPlotMacros(), and *BeginTemplexFunctions() blocks are the same as those found in session files.