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### 24.5 Giving information about a plugin

A plugin should give some information to the user about itself. This uses the following structure:

         struct plugin_info
         {
           const char *version;
           const char *help;
         };

Such a structure is passed as the `user_data` by the plugin's init routine using `register_callback` with the `PLUGIN_INFO` pseudo-event and a null callback.