How Modules are Defined

Each module has an entry in the System database, which consists of the MODULE command followed by commands to specify:

• The security for the module:

  General modules can be accessed by General users;

  Restricted modules can only be accessed by Free users;

  Free modules can be accessed by any user.

• The runfile.

• The initialisation macro (imacro), which is run on entry to the module.

• The Read/Write access to database types. For example, MODEL needs Write access to MODEL database, but Read access to Catalogue databases.

• The buffer size .