REF: Make interp/agg default precedence more clear.
REF: Make interp/agg default precedence more clear.

tacaswell/dataportal,NSLS-II/dataportal,danielballan/dataportal,ericdill/datamuxer,danielballan/dataportal,NSLS-II/dataportal,ericdill/databroker,tacaswell/dataportal,ericdill/datamuxer,danielballan/datamuxer,danielballan/datamuxer,ericdill/databroker,NSLS-II/datamuxer