About Arbortext Styler > Working with Elements in Your Stylesheet > Elements Overview > Declared and Undeclared Elements
Declared and Undeclared Elements
A declared element is one that is declared in a DTD or schema. If an element is not declared in a DTD or schema, it is an undeclared element. Undeclared elements can appear anywhere inside the root of an XML document because they are not governed by the rules of the DTD or schema. However, when a stylesheet is created from a document type, it will not contain any undeclared elements.
To add undeclared elements from your document, choose Insert > Element and create the new element with the name you require. You will see a message warning you that the element is not declared in the DTD:
This is an image of message warning that the element named “JTElement” that has been created is not declared in the DTD