List of units of use:

glRender.pas	- Render map
glCollide.pas	- Collision detection
glCamera.pas	- Camera implementation
glCalendar.pas 	- Render Calendar
glClock.pas 	- Render Clock
glPlanet.pas	- Render Internet Planet
glDoors.pas	- Corridors doors (Reboot, Shutdown, Log Off, Standby)
glPrinters.pas  - Printers rendering, monitoring
glNetwork.pas	- Networks monitors rendering
glMazeFE.pas	- Maze-like File Explorer
glPower.pas	- Power Management (power battery monitoring, UPS, etc.)
glHardware.pas  - Hardware Manager (TO BE THINKED)
glTerrain.pas 	- Courtyard terrain rendering (with sun light source with varying height,
		moving clouds, ambient light variation based on system time, and terrain
		texturing according to season, based on system date)
		- THIS COULD BE USED AS A SCREENSAVER
glShortcuts.pas - Render shortcuts cubes
glWindows.pas	- Render APPLICATIONS in 3D windows
glRecycle.pas	- Render Recycle Bin
glHUD.pas	- HUD, with a crosshair and tooltip about what is in sight
