When you have a function to install a callback, for example InstallMainCallback, NewAsyncTimer, InstallComCallback, viInstallHandler, DAQmxRegisterDoneEvent, DAQmxRegisterEveryNSamplesEvent, DAQmxRegisterSignalEvent, etc... it would be nice if the prototype was inserted directly in the source code by pressing Ctrl-D like for variables. Currently you have to open the documentation and do some copy/pasting.
