Data Transformation Engine Type Tree Maker Reference Guide

Chapter 3 - Type Tree Maker Document File Type Tree Maker Document File
The NEWTREE and OPENTREE elements instruct the Type Tree Maker to create a
new tree or open an existing one. A Choice expression determines the sequence
of actions to be performed at a particular location in the type tree. Each Choice is
a sequence of commands that acts on a particular type. The class of the active
type determines the valid command sequence.
For example, if the active type is a group, you can add components and new
GROUP types. If the active type is an item, you can add restrictions and new
ITEM types.
Note A Choice expression identifies a sequence of commands. It is not an XML
element, so it has no start or end tag.