•Appendix B, “Error Messages,” lists all the error messages the compiler produces.

This guide concludes with an index.

Conventions Used in This Guide

This guide contains syntax diagrams of the Pascal language in extended

Backus-Naur Formalism (BNF) notation. Here are the meta symbols:

Table P-1BNF Meta Symbols

Meta Symbol

Description

::=

Defined as

Can be used as an alternative

 

 

(a b)

Either a or b

[ a ]

Zero or one instance of a

 

 

{ a }

Zero or more instances of a

'abc'

The characters abc

 

 

The following table describes the type styles and symbols used in this guide:

Table P-2Typographic Conventions

Typeface or

 

 

 

Symbol

Meaning

 

Example

 

 

 

AaBbCc123

The names of commands, files, and

Edit your .login file.

 

directories; on-screen computer output

Use ls -ato list all files.

 

 

hostname%

You have mail.

AaBbCc123

What you type, contrasted with on-

hostname%

su

 

screen computer output

Password:

 

AaBbCc123

Command-line placeholder:

To delete a file, type rm filename.

 

replace with a real name or value

 

 

AaBbCc123

Book titles, new words or terms, or

Read the User’s Guide.

 

words to be emphasized

These are called class options.

 

 

You must be root to do this.

 

 

 

 

Preface

xxi