Not sure what you are asking for so here is my feebile attempt to answer this question.
Documents and broker events are synonomous in the webMethods ES environment. They are one in the same thing, it is just a nomenclature change webMethods made for the ES starting with 4.x.
Now, if you are talking about IS documents in webMethods 6.x, then yes a broker client can subscribe to this document as long as it is a publishable document and known to the Broker where the BrokerClient is connected.
Maybe if you rephrase your question or problem, I or others in the group can give a more focused answer.
Steve
#webMethods#broker#Universal-Messaging-Broker#Integration-Server-and-ESB