The PLA Preprocessor 
Overview of High-Level PLA
SPecifications
Specifying Fields
Using Equates
Specifying the Value of AND and OR
Plane Fields
Required OR Plane Fields
Complex Commands
Complex Conditions
Limiting the Number of Wordlines
Adding New Opcodes
The Begin and End Statements
Grouping Input and Output Fields
Multiple OR Plane Formats
Include Statements
Running the preprocessor
Using PLAs