It has been a long time since the free plug-in was released. The plug-in of the external chain killer was originally released for free, but when the first version was uploaded to the application center, the configuration file was not carefully examined. It was set to charge, and then someone quickly bought it. At this time, if it was changed to free, it would be unfair to the users who have already bought it, so they kept charging. This time, the plug-in for automatic generation of Z-Blog article body index is actually very