Recently, the FAA has been moving to migrate Obstacle Departure Procedures from the textual form they are in in the A/FD Departure Procedures section to use the same graphical/charted format that SIDs use -- in addition, this means that charted SIDs are just a kind of charted Departure Procedure, just like charted Obstacle Departure Procedures.
However, when SIDs were originally implemented, there was a safety valve put in for pilots who weren't up for handling a complex departure procedure on their own -- you could file "NO SID" in your flight plan and ATC wouldn't assign you a SID as part of the clearance. However, if the airport has a charted (graphical) Obstacle Departure Procedure and you're filing IFR, will you still get assigned the ODP as part of your clearance even if you are filing "NO SID" in your flight plan? Or will ATC do something else instead?