This example illustrates the specification for a simple multiple regression
problem with a single dependent variable. Note that brief descriptive
comments are enclosed in curly brackets. You can run this example with
the example data file

GSR;

{ Dependent variable (list): }

{ Specification of grouping variables (factors); note that

{ Specification of continuous predictor variables (covariates) }

{ Here the bar operator is used to construct the full factorial

For more examples, see GRM Syntax - Examples.