15. A computer storage memory device having computer-readable, computer-executable instructions for causing a computer to: access, via a collection aware application to run on the computer, a persistent document collection as a plurality of documents having one identifier wherein at least some documents are stored in different locations, the persistent document collection having a first attribute to identify the collection aware application permitted to modify the persistent document collection, a second attribute to specify an amount of disk space measured in a multiple of bits or multiple of bytes allocated to the persistent document collection, and a third attribute to indicate a frequency for synchronizing the persistent document collection; retrieve, via the collection aware application identified by the first attribute, the plurality of documents from the persistent document collection; modify, via the collection aware application identified by the first attribute, the plurality of documents to modify the persistent document collection in accordance with the second attribute by performing operations independently from an application configured to create the persistent document collection and directly interact with the at least some documents stored in the different locations; and synchronizing, via transmitting a control directive to the collection aware application that created the persistent document collection, the modified plurality of documents in the computer system with a persistent document collection in a data store.
15. A computer storage memory device having computer-readable, computer-executable instructions for causing a computer to: access, via a collection aware application to run on the computer, a persistent document collection as a plurality of documents having one identifier wherein at least some documents are stored in different locations, the persistent document collection having a first attribute to identify the collection aware application permitted to modify the persistent document collection, a second attribute to specify an amount of disk space measured in a multiple of bits or multiple of bytes allocated to the persistent document collection, and a third attribute to indicate a frequency for synchronizing the persistent document collection; retrieve, via the collection aware application identified by the first attribute, the plurality of documents from the persistent document collection; modify, via the collection aware application identified by the first attribute, the plurality of documents to modify the persistent document collection in accordance with the second attribute by performing operations independently from an application configured to create the persistent document collection and directly interact with the at least some documents stored in the different locations; and synchronizing, via transmitting a control directive to the collection aware application that created the persistent document collection, the modified plurality of documents in the computer system with a persistent document collection in a data store. 18. The device of claim 15 further comprising computer-readable, computer-executable instructions for causing the computer to transmit a control directive to remove a document from the persistent document collection.