.help spp Jan83 "IRAF Subset Preprocessor Language"
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Contents

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1. Introduction

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2. Getting Started

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3. Fundamentals of the Language
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3.1 Lexical Form
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3.1.1 comments
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3.1.2 continuation
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3.1.3 integer constants
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3.1.4 floating point constants
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3.1.5 character constants
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3.1.6 string constants
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3.1.7 identifiers
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3.2 Data Types
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3.3 Declarations
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3.3.1 variable, array, and procedure declarations
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3.3.2 array declarations
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3.3.3 string declarations
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3.3.4 global common declarations
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3.3.5 procedure declarations
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example 1: the sinc function
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3.3.6 multiple entry points
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example 2: multiple entry points
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3.4 Initialization
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3.5 Control Flow Constructs
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3.5.1 conditional execution
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3.5.2 error handling
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3.5.3 repetitive execution
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3.6 Expressions
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3.6.1 mixed mode expressions
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3.6.2 type coercion
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3.7 The Assignment Statement
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3.8 Some Examples
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example 3: length of a string
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example 4: min and max of a real array
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3.9 Program Structure
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3.9.1 include files
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3.9.2 macro definitions
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3.9.3 the task statement, and tasks
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3.9.4 help text

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4. Anachronisms

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5. Notes on Topics not Discussed

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APPENDIX A:  Predefined Constants
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APPENDIX B:  Detailed Examples
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Example 5: Matrix Inversion
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Example 6: Pattern Matching
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Example 7: Error Handling
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