CivetWeb Server Side Include (SSI) Test Page
  Note: Some of the tests below will only work on Windows, others only on Linux, and some probably not on all Linux distributions and all Windows versions.
  Execute: "cd"
  
  Execute: "pwd"
  
  File relative to current document: "hello.txt"
  
  Short form: "hello.txt"
  
  File relative to document root: "hello.txt"
  
  File with absolute path: "C:\Windows\system.ini"
  
  File with absolute path: "/etc/issue"
  
  Nested file relative to current documentt: "hello.shtml"