disabling semantic parser service?

Is there a way at the document level that I can disable the semantic parser service without disabling it for all documents?

I've got some code where I'm loading my formulae from a file (and parsing them using a Document instance) but want to parse them without using a separate thread (because my file-load should block on each document until it is parsed), but I don't really want to mess up the parsing of other documents that I have attached to existing syntax editor windows during this process...

If it's not possible to disable it on a per document basis, can you tell me a bit more about the behavior of the "Stop" method? For instance, if I call Stop before loading my documents and then Start after I'm done, but a parse was in progress when I call stop, does it restart that parse when I call start, or is that parse request lost forever?

Thanks,

[Modified at 07/03/2007 11:55 AM]