At the intermediate level, you learn to minimize your mistakes in model specification and to establish more sophisticated modeling techniques. The following topics in the Details: TCALIS Procedure section or elsewhere can help:

• Naming Variables and Parameters
  This section summarizes the naming rules and conventions for variable and parameter names in specifying models.

• Setting Constraints on Parameters
  This section covers various techniques of constraining parameters in model specifications.

• Automatic Variable Selection
  This section discusses how PROC TCALIS treats variables in the models and variables in the data sets. It also discusses situations where the specification of the VAR statement specification is deemed necessary.

• Computational Problems
  This section discusses computational problems that occur quite commonly in structural equation modeling. It also discusses some possible remedies of the computational problem.

• Missing Values
  This small section describes the default treatment of missing values.

• REFMODEL statement and RENAMEPARM statement
  These statements are useful when you need to make references to well-defined models when specifying a "new" model. See Example 88.10 for an application.

Revisit topics and examples covered at the basic level, as needed, to help you better understand the topics at the intermediate level.