Specify whether to show substitution group member chains.

Any substitution group can be shown on diagrams as a chain of diagram nodes depicting all substitution group members (or hierarchy of them) attached to the substitution group's head element.

Possible Choices:

"always"

Show the member chain by every depiction of substitution group's root element.
"by diagram root only"
Show the member chain only when the substitution group's head element is the diagram's root node.
Such a requirement may arise when there are too many substitution groups and/or they are too large, so showing them by every depiction of a corresponding root element will bloat the diagram to unmanageable size.
"none"
Do not show the member chains

See Also Parameters:

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