ISPConfig: Where are the templates for the config files and default pages?

IspConfig is a very powerful free server control panel with many features. It has a interesting feature as it generate error pages and default index of each domain. Which you can easily edit and get all future generated pages by your choice.

The templates for the configuration files are located in the folder:

/usr/local/ispconfig/server/conf/

The templates for the default index pages are in the folder:

/usr/local/ispconfig/server/conf/

The templates for the error pages are in the folder:

/usr/local/ispconfig/server/conf/error/