README.md

## X Desktop Group Configuration Files (XDG_CONFIG-*)

Each desktop profile is stored in an XDG_CONFIG-directory and can inherit
configurations from other desktop profiles (like the default desktop profile).
Hence, a complete desktop configuration is defined by multiple XDG_CONFIG-directories.

The desktop profile is set by setting the XDG_CONFIG-directories with the following system variables and search order:
- XDG_CONFIG_HOME
  * This is the base directory relative to which configuration files are searched first.
  * default is ~/.config
- XDG_CONFIG_DIRS
  * This is a set of preference ordered base directories relative to which configuration files are searched after $XDG_CONFIG_HOME.
  * default is /etc/xdg

and the XDG_DATA-directories with the following system variables and search order:
- XDG_DATA_HOME
  * default is not set
- XDG_DATA_DIRS
  * default is /usr/local/share:/usr/share

## XFCE4 XDG configurations

Here ${XDF_CONFIG_*} denotes all XDF_CONFIG directories, which are XDF_CONFIG_HOME and XDF_CONFIG_DIRS in its correct search order.
Here ${XDF_DATA_*} denotes all XDF_DATA directories, which are XDF_DATA_HOME and XDF_DATA_DIRS in its correct search order.

- default location of all desktop backgrounds:
  * ${XDF_DATA_*}/xfce4/backdrops/*

- desktop background:
  * ${XDF_CONFIG_*}/xfce4/xfconf/xfce-perchannel-xml/xfce4-desktop.xml

- panel description file:
  * ${XDG_CONFIG_*}/xfce4/panel/

- default desktop/panel menu description file:
  * ${XDG_CONFIG_*}/xfce4/desktop/menu.xml

- file manager settings:
  * ${XDG_CONFIG_*}/xfce4/xffm/

- multi-channel-settings:
  * ${XDG_CONFIG_*}/xfce4/mcs_settings/