1.1  Design Goals
1.2  Semantic Framework
1.3  Programming Considerations
1.4  Overview of the Language Reference Manual
1.5  Manual Layout
1.6  Flow Diagrams

1.6.1     Flow Diagrams for Lexical Elements
1.6.2     Flow Diagrams for Language Constructs

2.1  Character Set and Translator Input
2.2  Tokens and Token Separators
2.3  Tokens

2.3.1	Reserved Words
2.3.2	Operator Symbols
2.3.3	Special Symbols
2.3.4	Identifiers
2.3.5	Literals
2.3.6	Numeric Literals
2.3.7	Enum Literals
2.3.8	String Literals
2.3.9	Boolean Literals
2.3.10	Indirect Literal

2.4  Token Separators

2.4.1	Comment
2.4.2	Pragmat

3.1  Program
3.2  Body
3.3  Declarations
3.4  Assertions
3.5  Names and Scopes
3.6  Forward References to Names
3.7  Imports List

4.1  Types and Subtypes

4.1.1     Use of Types and Subtypes
4.1.2     Specifying Types and Subtypes
4.1.3     Relationship Between Types and Subtypes
4.1.4     Language-Defined and User-Defined Types
4.1.5     Types, Type Equivalence and Type Comparison
4.1.6     Subtypes, Subtype Equivalence and Subtype Comparison
4.1.7     Range

4.2  Variables and Constants

4.1.3     Variable or Constant Declaration

4.3  Overview of Built-In Types
4.4  Declaration of Subtypes and Types

4.4.1     Abbreviation
4.4.2     Declaring and Using a New Type
4.4.3     Declaring and Using a New Indirect Type

4.5  Type and Subtype Inquiry, Predicates and Assertions

4.5.1     Subtype Inquiry
4.5.2     Type Inquiry
4.5.3     Attributes

5.1  Data Items
5.2  Operators and Operands
5.3  Primary
5.4  Built-In and User-Defined Literals and Constructors
5.5  Manifest Expressions and Conditional Translation
5.6  Built-In Constructors
5.7  Value Resolution and User-Defined Values

6.1  Assignment Statement
6.2  Begin Statement
6.3  If Statement
6.4  Case Statement
6.5  Repeat Statement
6.6  Exit Statement
6.7  Return Statement
6.8  Goto Statement

7.1  Procedure Declaration and Invocation
7.2  Function Declaration and Invocation

7.2.1  Declaring and Using a New Type

7.3  Formal and Actual Parameters

8.1  Capsule Declaration and Invocation
8.2  Visible List

9.1  Exception Names
9.2  Guard Statement
9.3  Raising of Exceptions
9.4  Reraising Exceptions

10.1  Task Declaration, Task Creation, and Activation Variables
10.2  The Act Priority Scheduler
10.3  Message Passing Using Mailbox Variables
10.4  Clocks and Delays
10.5  Waiting
10.6  Shared Variables
10.7  Region Statement and Data Lock Variables

11.1  Interfaces

11.1.1     Signatures
11.1.2     Translation Time Property Lists

11.2  Explicit Overloading
11.3  Generic Overloading

11.3.1     Type Generic Constraints
11.3.2     Subtype Generic Constraints Lists
11.3.3     Operation Generic Constraints
11.3.4     Value Generic Constraints

11.4  Needs List

12.1  Configuration Capsules
12.2  Specification of Representations
12.3  Locations
12.4  Foreign Code

13.1  Definable Symbols
13.2  Definition of Operators and Assignment
13.3  Initialization and Finalization
13.4  Definition of Selector Operations
13.5  Definition of Resolution
13.6  Extending the Case Statement to User-Defined Types
13.7  Extending the Repeat Statement to User-Defined Types

14.1  More About Mailboxes

14.1.1     Available Counts
14.1.2     Conditional Message Passing
14.1.3     Assignment and Equality of Mailboxes
14.1.4     Interrupts

14.2  More About the Act Scheduler

14.2.1     Act Variable States
14.2.2     Critical Areas
14.2.3     Scheduling Algorithm

14.3  Waiting

14.3.1     Synchronizing Operations for Waiting Invocations
14.3.2     Act Scheduler Operations for Waiting
14.3.3     Expansion of the Wait statement

14.4  More About Mutual Exclusion

14.4.1     Semantics of the Region Statement
14.4.2     More About Data Locks
14.4.3     Latch

14.5  User-Defined Schedulers

14.5.1     Act Assignment and Equality
14.5.2     Low and High Operations
14.5.3     Task Activation Creation and Completion
14.5.4     Example - A Round Robin Scheduler

14.6  Low-Level I/O

A.1  File Variables, Open, and Close
A.2  File Processing
A.3  Text Files

C.1  BOOL
C.2  ENUM
C.3  INT
C.4  FLOAT
C.5  RECORD
C.6  UNION
C.7  ARRAY
C.8  STRING
C.9  SET
C.10  ACT
C.11  MAILBOX
C.12  DATA_LOCK
C.13  LATCH
C.14  FILE
C.15  ASCII