<oper>

The <oper> element defines an operator within a syntax definition. Typical operators are equals (=), plus (+) or multiply (*). This element is part of the DITA programming domain, a special set of DITA elements designed to document programming tasks, concepts, and reference information.

Content models

See appendix for information about this element in OASIS document type shells.

Inheritance

+ topic/ph pr-d/oper

Example

This section is non-normative.

<syntaxdiagram>
  <title>Adding</title>
  <groupseq><kwd>1</kwd><oper>+</oper><var>two</var>
<delim>=</delim><kwd>something</kwd>
  </groupseq>
</syntaxdiagram>

Content model

(Text | <data> | <data-about> | <foreign> | <unknown> | <keyword> | <term> | <text>)*

Contained by

<groupchoice>, <groupcomp>, <groupseq>, <synph>

Zero or more of the following
  • Text
  • <data>
  • <data-about>
  • <foreign>
  • <keyword>
  • <term>
  • <text>
  • <unknown>

Contained by

  • <groupchoice>
  • <groupcomp>
  • <groupseq>
  • <synph>

Inheritance

+ topic/ph pr-d/oper

The <oper> element is specialized from <ph>. It is defined in the pr-domain module.

Attributes

The following attributes are available on this element: Universal attribute group (with a narrowed definition of @importance, given below) and outputclass.

@importance
The attribute indicates whether this item in a syntax diagram is optional, required, or default. Output processors can indicate this designation in a generated diagram. Allowable values are:
optional
This section of the syntax is optional.
required
This section of the syntax is required.
default
This section of the syntax is used by default or has this default value.
-dita-use-conref-target
See Using the -dita-use-conref-target value for more information.
@importance
The attribute indicates whether this item in a syntax diagram is optional, required, or default. Output processors can indicate this designation in a generated diagram. Allowable values are:
optional
This section of the syntax is optional.
required
This section of the syntax is required.
default
This section of the syntax is used by default or has this default value.
-dita-use-conref-target
See Using the -dita-use-conref-target value for more information.