Structures generally define the information stored with in an object eg for a contact it includes firstname, surname, phone etc.
With-in the mydigitalstructure service you can use structures to extended an existing object.
You can then store and search for information managed with-in these structures, in the context of an object.
Structures are made up of categories and elements (which can include options - eg if select list)
USING TO MANAGE OBJECT INFORMATION
A structure element can be updated like any other standard attribute via name pair value.
&_XXXX=[value] or &seXXXX=[value]
where _XXXX is the element alias.
USING WITHIN AN ADVANCED SEARCH
You can add attributes to the select and filter list as per any other attribute.