1.1 Opening Remarks
 1.2 Scope of the Manual
  1.2.1 Typographic Conventions within the Manual
 1.3 Hints on Using the PSL System
  1.3.1 Loading Optional Modules
  1.3.2 Error and Warning Messages
 1.4 Switches and Globals
 1.5 Compilation Versus Interpretation
 2.1 Data Types
  2.1.1 Data Types and Structures Supported in PSL
  2.1.2 Predicates Useful with Data Types
  2.1.3 Converting Data Types
 3.1 Numbers and Arithmetic Functions
  3.1.1 Big Integers
  3.1.2 Conversion Between Integers and Floats
  3.1.3 Arithmetic Operators
  3.1.4 Arithmetic Functions
  3.1.5 Functions for Numeric Comparison
  3.1.6 Bit Operations
  3.1.7 Various Mathematical Functions