Group Particles (XSM)

An element composed of other elements is a parent element with child elements.

Child elements are linked to their parent element through a group particle.

There are three kinds of group particles:

Tool	Symbol	Description
		Sequence - Child elements must appear at least once in the order of their declaration
		Choice - Only one child element can be linked to the parent element
		All - Child elements can appear in any order and each of them once or not at all

These particles translate to the following tags in each of the supported languages:

Group Particle	XSD	XDR (order attribute)	DTD (separator)
Sequence	<sequence>	seq	, (comma)
Choice	<choice>	one	\| (bar)
All	<all>	many	, (comma)

Creating a Group Particle
You can create a group particle from the Toolbox or from the property sheet of an element, group, or complex type.
Group Particle Properties
To view or edit a group particle's properties, double-click its diagram symbol or Browser or list entry. The property sheet tabs and fields listed here are those available by default, before any customization of the interface by you or an administrator.
Adding a Child Object to a Group Particle
XML objects do not support standard link objects. To link a child object to a group particle, you must click the child object tool in the Toolbox and then click the group particle symbol in the diagram. This will automatically create a link between both objects.

Parent topic: XML Diagrams