I'n not sure of the Structural package, but the Architectural has smbols with several different shapes. You create types within these families, one for every note/note number. Then you create a note block (under views/new) for that family, and you can place a list of the notes on the sheets. Revit City also has these available for download.
The only caviot is that the Note block will list every every note once it is placed in the project, even if it is not on that individual sheet.
Scott Womack