Preliminaries

• What This Module Does - An overview of the problems module's role and abilities.

• How To Include This Module - What to do to make use of the problems module in a new command-line tool.

Chapter 1: Starting Up

• Problems Module - Setting up the use of this module.

Chapter 2: Problems

• Problems, Level 0 - To handle fatal errors and establish how problem sigils work.

• Problems, Level 1 - To render problem messages either as plain text or HTML, and write them out to files.

• Problems, Level 2 - To assemble and format problem messages within the problem buffer.

• Problems, Level 3 - Here we provide some convenient semi-standardised problem messages, which also serve as examples of how to use the Level 2 problem message routines.