[R] documentation buglet: units?

[Remy X.O. Martin]

I was looking for information how to use (metric) units, e.g. to say ps.options(width=10cm) instead of doing the conversion myself. A trace is shown below, obtained with R1.5.1; this occurs regardless of whether I started the html interface or not.
Can anyone confirm this before I submit a bug report?

>help.search("units")
Help files with alias or title matching `units',
type `help(FOO, package = PKG)' to inspect entry `FOO(PKG) TITLE':

units(Hmisc)                           Units Attribute of a Vector
units(base)                            Graphical Units
grid-internal(grid)                    Internal Grid Functions
convertNative(grid)                    Convert a Unit Object to Native units

> ?units
Error in help("units") : No documentation for `units' in specified packages and libraries:
  you could try `help.search("units")'
> help("units", package="base")
Error in help("units", package = "base") : 
        No documentation for `units' in specified packages and libraries:
  you could try `help.search("units")'
> help("units", package="Hmisc")  ## this works:
help() for units  is shown in browser kdehelp ...
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