Enable the discount namespace switch feature.
This is a Yes or No directive.
The default is No.
This directive is only available for use in the local
(catalog.cfg) configuration file.
It will not affect any other website in any way.
This directive will not work in the global
(interchange.cfg) configuration file.
This directive was introduced in version 5.4.0,
and is therefore not available for use with any earlier Interchange version.
When DiscountSpacesOn is enabled,
the current discount namespace may be switched using any of the
When this feature is not enabled (the default),
only the "main" discount namespace will be available,
and no namespace switch requests will be acted upon.
All attempt to change the discount namespace will result in an
error in the website's ErrorFile.