This manual describes the Object Pascal programming language as it is used in Borland development tools.  What’s in this manual?  The first seven chapters describe most of the language elements used in ordinary programming. Chapter 8 summarizes standard routines for file I/O and string manipulation. The next chapters describe language extensions and restrictions for dynamic-link libraries and packages (Chapter 9), and for object interfaces (Chapter 10). The final three chapters address advanced topics: memory management (Chapter 11), program control (Chapter 12), and assembly-language routines within Object Pascal programs (Chapter 13). Using Object Pascal The Object Pascal Language Guide is written to describe the Object Pascal language for use on either the Linux or Windows operating systems. Differences in the language relating to platform dependencies are noted where necessary. Most Delphi/Kylix application developers write and compile their Object Pascal code in the integrated development environment (IDE). Working in the IDE allows the product to handle many details of setting up projects and source files, such as maintenance of dependency information among units. Borland products may enforce certain constraints on program organization that are not, strictly speaking, part of the Object Pascal language specification. For example, certain file- and program-naming conventions can be avoided if you write your programs outside of the IDE and compile them from the command prompt.