Extending Control (from Fraktal SAS Programming)

Now, with proper declaration, it is safe to run your MACRO as a component in a validated system. However, it is still difficult to follow its results and discover failure risks or un-wanted misbehavior.

You might therefore find it useful to add functionality such as:

1. apply logic to check for parameters’ appropriate values
2. navigate through the ecosystem by reading and processing metadata
3. document workflow by writing comments to the LOG
4. inform responsibles about invocation by sending an email
5. write a text file that contains the plain code the MACRO generated

We will implement these requirements now step by step and thereby touch relevant parts of the so-called SAS Macro Facility.