fColScope   Specifies whether the header is Column/Both or Row.
For table structure nodes, the union is interpreted as an ordering of the table ends
relative to other tables by using cpLim, which can be used to determine the nesting
order of tables within tables.
In the context of the DocExComment_BeginStructNode, the add-in can ignore the
pwchActualText member of this union.
The pwchAltText member specifies alternate text for the structure node.
The fNoEndNode parameter to HrBeginStructNode specifies whether Publisher calls the
HrEndStructNode method to mark the end of the structure node. If fNoEndNode is false,
then Publisher calls HrEndStructNode to close off the content bounded by the node. If
this parameter has a true value, then the node does not bound any content.
The fNoEndNode parameter affects the interpretation of the parent ID value of
subsequent nodes. If fNoEndNode is false, nodes inserted between this call to
HrBeginStructNode and the subsequent call to HrEndStructNode, and that have a
parent ID of -1, are children of this node. However, if fNoEndNode is true, then nodes
inserted after this call to HrBeginStructNode, and that have a parent ID of -1, are not
children of this node but are children of the next-most-recently specified node that has
fNoEndNode equal to false.
Document structure nodes can be nested to arbitrary depth.
The nodes specified by HrBeginStructNode and those specified by
DocExComment_BeginStructNode share the same ID space and exist in the same
document structure tree. HrBeginStructNode and DocExComment_BeginStructNode
are two alternative ways of adding nodes to this tree. For example, if the most recently
opened node was opened by HrBeginStructNode and the next node encountered is
from a DocExComment_BeginStructNode EMFcommentrecord with idNodeParent equal
to -1, it means that the node from HrBeginStructNode is the parent of the node from
the DocExComment_BeginStructNode record.
Publisher calls the HrEndStructNode method to specify the end of a document-
structure node for content that encompasses multiple pages in the document. The
structure node ended by the HrEndStructNode was begun previously by a call to the
HrBeginStructNode method. For more information, see HrBeginStructNode in this
article.
HrEndStructNode