Upload=On/Off
If this variable is set to True,
the WBSP engine will process WBSP files that upload files to server. To learn
more about this, please read the explanation for usage of WB_AllowMultipart variable in section
FormFields and explanation for Upload section
of WBSP file. WBSP enables author to control the type, size and location of
uploaded files. However, server administrator can disable file-uploading by
setting this variable off, even when author of the site has created proper WBSP
files. Default value is Off.