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Home > Online Product Documentation > Table of Contents > Specifying That An Element Can Contain One of a Group of Elements in DTDs Specifying That An Element Can Contain One of a Group of Elements in DTDs
You might want to define an element that contains one element out of a group of elements. For example, you might want an
In the Tree tab, to define an element that contains one of a group of elements:
1. Define the elements that your new element can contain. See
Defining Elements in DTDs.
2. Define the element that you want to contain another element. This is the container element.
3. Click the container element name.
4. In the left tool bar, click
New Modifier
. Stylus Studio displays a drop-down menu.
5. Double-click
Choice.
6. For each element in the group of elements from which one element can appear:
a. Click
New Reference to Element
in the left tool bar.
b. Type the name of the element and press Enter.
After you add a reference to an element, you might want to check the definition of the referenced element. To do this, right-click the reference. In the shortcut menu, click Go To Definition. Stylus Studio moves the focus to the definition of the referenced element. When the XSLT processor validates an instance document against this DTD, it ensures that each instance of the new element you just defined contains exactly one of the referenced elements. Example
The tree representation for an
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