[Boost-users] [build] Displaying Jam Actions

Is there any way to get bjam to display the commands it is running during a build? I see things like "doxygen-action" but that doesn't tell me exactly how dxygen is being run. I'm trying to figure out how to invoke the Boost documentation tools outside of jam but I can't puzzle it out. A switch to print the actual commands being executed would help a lot. Thanks. -Dave