Create a variant of a design part when you want the new part to be similar in structure to the source design part, but vary in its definition. For example, if you have an Output Screens design part, you might create a variant for each language: Output Screens Kanji, Output Screens Spanish, and so on.
The advantage of variant design parts is that they enable you to define a logical structure and still support clearly defined variations for different applications, with each variation following the same basic structure. For example, if the source design part has child design parts in the tree, the new variant design part also has the same child design parts.
All variants of one design part must be at an equivalent position in the tree structure. A variant design part uses the same part ID as the source design part.
You can perform all the same operations on a variant design part as you can on the source design part.
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