anchor.diff:  
   `notifyvar_<varname>`::
       Extra variables to be used to replace `{<varname>}` replacement parameters in notify message.
  -    e.g. `notifyvar_instancename="My Instance"` will replace `{instancename}` with `My Instance` in the notify message.
  ++
  +e.g. `notifyvar_instancename="My Instance"` will replace `{instancename}` with `My Instance` in the notify message.
   
   `noNotifyWarn`::
       Disable notification at start of shutdown warning period
  
positive.code: `enablemod <modnum>=<modtype>`::
      Enables the `arkmod_<modnum>` setting in the instance config.
      modtype defaults to `game`.
      Mod types:
  
      `game`;;
          A mod in `GameModIds`
  
negative.code: 
  `steamcmd_appinfocache`::
      The path to the Steam appinfo cache file.
  +
  Most systems will have this in `$HOME/Steam/appcache/appinfo.vdf`, 
  but some systems (especially with the `steamcmd` package installed)
  have this instead in `$HOME/.steam/appcache/appinfo.vdf`.
  You will need to modify this setting if this is the case.
  
  `steamcmd_workshoplog`::
      The path to the Steam workshop log file.
  +
  Most systems will have this in `$HOME/Steam/logs/workshop_log.txt`,
  but some systems (especially with the `steamcmd` package installed)
  have this instead in `$HOME/.steam/logs/workshop_log.txt`.
  You will need to modify this setting if this is the case.
  
  `steamdataroot`::
      The path to the SteamCMD data.
  +
  Defaults to `$steamcmdroot`
  +
  Some SteamCMD installations  (especially with the `steamcmd` package installed)
  store downloaded files (workshop files, etc.) in /home/.steam instead of in the steamcmd
  directory.
  
  `steamworkshopdir`::
      The path to the SteamCMD workshop directory.
  +
  Defaults to `$steamdataroot/steamapps/workshop`
  +
  Some SteamCMD installations (especially with the `steamcmd` package installed)
  use `SteamApps` as the steamapps directory instead of `steamapps`
  
  `arkserverexec`::
      The relative path within an ARK server install where the
      ARK server executable can be found.
  +
  For the standard ARK server, this should be `ShooterGame/Binaries/Linux/ShooterGameServer`
  
  `arkbackupdir`::
      The directory in which to store backups.  Can be overridden in
  