+ # Which Sieve language extensions are ONLY available in global scripts. This
+ # can be used to restrict the use of certain Sieve extensions to administrator
+ # control, for instance when these extensions can cause security concerns.
+ # This setting has higher precedence than the `sieve_extensions' setting
+ # (above), meaning that the extensions enabled with this setting are never
+ # available to the user's personal script no matter what is specified for the
+ # `sieve_extensions' setting. The syntax of this setting is similar to the
+ # `sieve_extensions' setting, with the difference that extensions are
+ # enabled or disabled for exclusive use in global scripts. Currently, no
+ # extensions are marked as such by default.
+ #sieve_global_extensions =
+