JVMs on some platforms are designed to operate in either 32-bit or 64-bit modes
controlled by a "-d32" or "-d64" parameter passed on the Java command line.
When running with 32-bit or 64-bit versions of the Wrapper,
it is often convenient to have this parameter set automatically.
This parameter has been included in the default
Wrapper configuration file
but is disabled by default for backwards compatibility.
The "-d32" or "-d64" parameters will be set on Mac OSX, FreeBSD, HP-UX, and Solaris platforms.
On other platforms, the parameter is currently ignored
as the standard JVM implementation on those platforms do not expect the "-d32" or "-d64" parameters.