The user object is returned by applying parse method on value contained in QUERY_STRING. The properties of the user object correspond to the variables present in the QUERY_STRING and the corresponding assigned values.
This example explains the relationship between the user object and the QUERY_STRING.
x = doc.getenvvar(QUERY_STRING) Set y = doc.parse x 'y is the user object print y.var1 ' print the value contained in the variable var1. print y.var2 ' print the value contained in the variable var2.