as.data.frame.rtv       coerce rtv objects to other objects
crtv                    crtv objects
drtv                    drtv objects
formatdtu               format discrete time units
is.leap                 calendar functions
is.rtv                  test an object's class
plot.rtv                time plots
print.rtv               print and format rtv objects
rtvo.reset              rtv options
sort.rtv                standard math operations
