A uniform notation describes the format of data management macro
instructions. This notation is not part of the language; it is merely
a way of describing the format of the instructions. The instruction
format definitions in this book use the following conventions:
- [ ]
- Brackets enclose an optional entry. You may, but need not, include
the entry. Examples are:
- |
- An OR sign (a vertical bar) separates alternative entries. You
must specify one, and only one, of the entries unless you allow an
indicated default. Examples are:
- [REREAD|LEAVE]
- [length|'S']
- { }
- Braces enclose alternative entries. You must use one, and only
one, of the entries. Examples are:
- BFTEK={S|A}
- {K|D}
- {address|S|O}
Sometimes alternative entries are shown in a vertical stack
of braces. An example is:
MACRF={{(R[C|P])}
{(W[C|P|L])}
{(R[C],W[C])}}
|
|---|
In the example above, you must choose only one entry
from the vertical stack.
- . . .
- An ellipsis indicates that the entry immediately preceding the
ellipsis may be repeated. For example:
- (dcbaddr,[(options)],.
. .)
- ‘ ’
- A ‘ ’ indicates that a blank
(an empty space) must be present before the next parameter.
- UPPERCASE BOLDFACE
- Uppercase boldface type indicates entries that you must code
exactly as shown. These entries consist of keywords and the following
punctuation symbols: commas, parentheses, and equal signs. Examples
are:
- CLOSE , , , ,TYPE=T
- MACRF=(PL,PTC)
- UNDERSCORED UPPERCASE BOLDFACE
- Underscored uppercase boldface type indicates the default used
if you do not specify any of the alternatives. Examples are:
- [EROPT={ACC|SKP|ABE}]
- [BFALN={F|D}]
- Lowercase Italic
- Lowercase italic type indicates a value to be supplied
by you, the user, usually according to specifications and limits described
for each parameter. Examples are: