In traditional SAS
syntax, angle brackets (<>) are used to denote optional syntax.
In the logging configuration file syntax, square brackets ([ ]) are
used to denote optional syntax. The logging configuration file syntax
uses the following symbols:
< >
The left angle bracket
begins an XML element. The right angle bracket ends an XML element.
/
A slash before an element
name ends the element definition.
/>
A slash followed by
a right angle bracket ends the definition for the <param>, <level>,
and <appender-ref> subelements.
[ ]
Square brackets identify
optional elements or arguments. Any XML element or attribute that
is not enclosed in square brackets is required.
|
A vertical bar indicates
that you can choose one value from a group of values. Values separated
by bars are mutually exclusive.
-1-n…
For repeated elements,
the -1 after an element indicates the first element. The ellipsis
before an element and the -n after the same element indicates that the element can be repeated
any number of times.
" "
Double quotation marks
identify an attribute value.