Technical data

directory specifications and for a substring specification in
an assignment statement.
| In command format descriptions, vertical bars separate
choices within brackets or braces. Within brackets, the
choices are optional; within braces, at least one choice is
required. Do not type the vertical bars on the command
line.
{ } In command format descriptions, braces indicate required
choices; you must choose at least one of the items listed. Do
not type the braces on the command line.
Type
This typeface represents the introduction of a new. It also
represents the name of argument an attribute, or a reason.
italics
Italic text indicates important information, complete titles
of manuals, or variables. Variables include information
that varies in system output (Internal error number), in
command lines (/PRODUCER=name), and in command
parameters in text (where (dd) represents the predefined
par code for the device type.
UPPERCASE TEXT Uppercase text indicates a command, the name of a
routine, the name of a file, or the abbreviation for a system
privilege.
Monospace text
Monospace type indicates code examples and interactive
screen displays.
In the C programming language, monospace type in text
identifies the following elements: keywords, the names of
independently compiled externalfunctions and files, syntax
summaries, and references to variables or identifiers
introduced in an example.
–
A hyphen at the end of a command format description,
command line, or code line indicates that the command or
statement continues on the following line.
numbers All numbers in text are assumed to be decimal unless
otherwise noted. Nondecimal radixes---binary, octal, or
hexadecimal---are explicitly indicated.
Preface xiii