An incomplete volume two LEO III user manual. The contents page describes four parts:

• Part 1, Description of CLEO
• Part 2, CLEO Specification
• Part 3, Specimen CLEO Programme
• Part 4, The CLEO Compiler.

Parts one and three are missing. Part two is comprised of:

• Introduction
• General form of a CLEO Programme
• Basic Symbols
• Arithmetic and Conditional Expressions
• Literal
• Identifiers
• The CLEO File Heading Sheet
• The CLEO Data Description Sheets
• The CLEO Chapter and Record Overlay Sheet
• The CLEO Command Sheet
• CLEO Commands
• The CLEO Programme Sheets
• Amendements
• Intercode in CLEO Programmes
• Further Subroutine Facilities
• Special Values
• Trials Facilities
• Appendices.

Part 4 is comprised of :

• Introduction
• The Amending Routine
• The Data Editing Routine
• The Procedure Editing Routine
• The Identifier Referencing Routine
• The Translating Routine I: Arithmetic and File Handling
• The Translating Routine II: List Commands
• The Post Mortem Routine
• The Intercode Translator
• Appendices.

A few pages of part one have been misfiled into part two.

Provenance :
Collected by John Daines and donated to the LEO Computers Society