job:  #10255  adding implementation note to document safe messages
job:  #10255  adding implementation note to document safe messages

rmulvey/mc,rmulvey/mc,cortlandstarrett/mc,leviathan747/mc,keithbrown/mc,keithbrown/mc,cortlandstarrett/mc,lwriemen/mc,xtuml/mc,keithbrown/mc,lwriemen/mc,cortlandstarrett/mc,rmulvey/mc,keithbrown/mc,keithbrown/mc,xtuml/mc,leviathan747/mc,rmulvey/mc,xtuml/mc,keithbrown/mc,lwriemen/mc,xtuml/mc,leviathan747/mc,lwriemen/mc,leviathan747/mc,lwriemen/mc,lwriemen/mc,leviathan747/mc,rmulvey/mc,cortlandstarrett/mc,xtuml/mc,cortlandstarrett/mc,xtuml/mc,cortlandstarrett/mc,rmulvey/mc,leviathan747/mc