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This section explains how information is organized and presented in this book.
This book is organized as follows:
Concepts, introduces the fundamental concepts of LU0. It is intended for programmers who are not familiar with LU0.
Designing and Writing LU0 Applications, contains general information a programmer needs when writing LU0 applications. This chapter also includes information about SNA concepts relevant to the design of LU0 applications, and on compiling and linking an LU0 application.
LU0 Functions, describes each LU0 function in detail. Each description includes the following: purpose, function prototype, supplied parameters and returned values, and details on how the function interacts with other LU0 functions.
Typographic Conventions shows the typographic styles used in this document.
| Special Element | Sample of Typography |
| Emphasized words | back up files before deleting |
| Document title | SNAP-IX Administration Guide |
| File or path name | /usr/spool/uucp/myfile.bkp |
| Program or application | snaadmin |
| Command or Solaris utility | define_node; cd |
| General reference to all commands of a particular type | query_* (indicates all of the administration commands that query details of a resource) |
| Option or flag | |
| Parameter or Motif field | opcode; LU name |
| Literal value or selection that the user can enter (including default values) | 255; On node startup |
| Constant or signal | |
| Return value | AP_INVALID_FORMAT; 0; -1 |
| Variable representing a supplied value | filename; LU_name; user_ID |
| Environment variable | |
| Programming verb | GET_LU_STATUS |
| User input | 0p1 |
| Computer output | CLOSE |
| Function, call, or entry point | ioctl |
| Data structure | |
| 3270 key | ENTER |
| Keyboard keys | Ctrl+D; Enter |
| Hexadecimal value | 0x20 |
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