Automatic documentation update

Author: igorpecovnik

docs/User-Guide_Armbian-Config/System.md

@@ -220,10 +220,48 @@ armbian-config --cmd BOOT01
 ~~~
 
 
-## Install, remove and configure desktop environments
+## Desktop
 
-__Edit:__ [footer](https://github.com/armbian/configng/new/main/tools/include/markdown/Desktops-footer.md) [header](https://github.com/armbian/configng/new/main/tools/include/markdown/Desktops-header.md)  
-#### Gnome desktop
+
+Install, remove and configure desktop environments
+
+
+<!--- header START from tools/include/markdown/Desktops-header.md --->
+Armbian desktop installation uses upstream meta-packages from Debian and Ubuntu repositories, making it distro-agnostic and independent of pre-built Armbian desktop packages.
+
+**How it works:**
+
+- Installs the desktop environment meta-package (e.g., `xfce4`, `gnome-session`) along with essential extras
+- Tracks all newly installed packages so uninstall cleanly removes everything added on top of CLI, including dependencies
+- Applies Armbian branding: wallpapers, icons, login screen theme, and default user settings
+- Configures the display manager (LightDM, GDM3, or SDDM) with auto-login
+- Installs Armbian Imager as an AppImage for writing OS images
+- Sets up Profile Sync Daemon (psd) to keep browser profiles in RAM, reducing flash media wear
+- Removes unnecessary bloat pulled in by meta-packages
+
+**Networking:**
+
+Desktop environments that require NetworkManager (e.g., GNOME) install it alongside the existing `systemd-networkd`. Wired Ethernet interfaces remain managed by `systemd-networkd`, while NetworkManager handles WiFi and VPN connections. This avoids disrupting existing network configuration.
+
+**Supported desktops:**
+
+| Desktop | Best for | Resources |
+|---|---|---|
+| XFCE | Single board computers, low-end hardware | ~300 MB RAM |
+| GNOME | Modern desktops, touchscreen devices | ~800 MB RAM |
+| Cinnamon | Users familiar with Windows layout | ~500 MB RAM |
+
+!!! note "Switching desktops"
+
+    Only one desktop environment should be installed at a time. Remove the current desktop before installing a different one to avoid package conflicts and mixed configurations.
+
+<!--- header STOP from tools/include/markdown/Desktops-header.md --->
+
+__Edit:__ [footer](https://github.com/armbian/configng/new/main/tools/include/markdown/Desktops-footer.md) [header](https://github.com/armbian/configng/edit/main/tools/include/markdown/Desktops-header.md)  
+#### GNOME
+
+
+GNOME - modern, full-featured desktop
 
 __Edit:__ [footer](https://github.com/armbian/configng/new/main/tools/include/markdown/GNOMDE-footer.md) [header](https://github.com/armbian/configng/new/main/tools/include/markdown/GNOMDE-header.md)  
 ###### Gnome desktop Install
@@ -287,7 +325,10 @@ armbian-config --cmd GNME04
 
 
 
-#### XFCE desktop
+#### XFCE
+
+
+XFCE - lightweight and fast desktop
 
 __Edit:__ [footer](https://github.com/armbian/configng/new/main/tools/include/markdown/XFCEDE-footer.md) [header](https://github.com/armbian/configng/new/main/tools/include/markdown/XFCEDE-header.md)  
 ###### XFCE desktop Install