The specialized Control Link providing the connection between an ordered list of Expressions and the target index_on_axis field in a Property Table Reference object.
The expr_index field is a 1-based index into the ordered aggregation of Expressions, and is used to select the specific Expression that defines Property Table Reference's index_on_axis field.
| SE_STRING | description; | (notes) |
|---|
| SE_UINT32 | expr_index; | (notes) |
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A text description of what the Control_Link is for
index of the expression whose value controls the index_on_axis of the affected <Property Table Reference> object.