Comma delimited, lower case list of object properties that should not be serialized when serializing objects.

Default:
activecontrol,classlibrary,baseclass,comment,docked,dockposition,controls,objects,controlcount,
class,parent,parentalias,parentclass,helpcontextid,whatsthishelpid,
width,height,top,left,tag,picture,onetomany,childalias,childorder,relationalexpr,timestamp_column