R Packages 221
In some cases, some files will need to be loaded before others; classes need
to be defined before their extensions or before any method that dispatches
on them is defined. To control the order in which the files are collated, for
loading into R, use the Collate directive in the DESCRIPTION file.
If there is code that is needed on a specific platform, it should be placed in
an appropriately named subdirectory of the R directory. The possible names
are unix and windows. There should be corresponding subdirectories of the
man directory to hold the help pages for functions defined only for a specific
platform, or where the argument list or some other features of the function
b ehave in a platform-specific manner.
In addition, there are often operations ...