R version 2.11.1 (2010-05-31)
Copyright (C) 2010 The R Foundation for Statistical Computing
ISBN 3-900051-07-0

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> # fields, Tools for spatial data
> # Copyright 2004-2007, Institute for Mathematics Applied Geosciences
> # University Corporation for Atmospheric Research
> # Licensed under the GPL -- www.gpl.org/licenses/gpl.html
> 
> 
> # test of vgram
> 
> library( fields)
Loading required package: spam
Package 'spam' is loaded. Spam version 0.15-5 (2009-08-08).
Type demo( spam) for some demos, help( Spam) for an overview
of this package.
Help for individual functions is optained byadding the
suffix '.spam' to the function name, e.g. 'help(chol.spam)'.

Attaching package: 'spam'

The following object(s) are masked from 'package:base':

    backsolve, forwardsolve, norm

 Use help(fields) for an overview of this library

library( fields, keep.source=TRUE) retains comments in the source code. 
> options(echo=FALSE)