[Rd] read.xport in foreign

[Frank E Harrell Jr]

I am using read.xport in the foreign package in some "mission critical"
applications.  Unfortunately there remain a few bugs resulting in
erroneous values (especially more NAs than are really there) in a few
variables.  The datasets I am using are unfortunately proprietary so that
I am unable to give them to the package maintainers for testing.  I know
that significant improvements have been made in read.xport over the past
year, which I very much appreciate. If the maintainers could post a change
log I could at least run periodic tests using the proprietary datasets,
comparing results to dataload and to Stat/Transfer.  I could not find
previous improvements to read.xport listed in the package's source file. 
Thanks for considering this.

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Frank E Harrell Jr    Professor and Chair            School of Medicine
                      Department of Biostatistics    Vanderbilt University