Tower Floor -- X Window System

Behind you a spiral stone staircase leads up to (signed) C Programming and down Specific Applications.

Just to the left of the staircase, the ever present white marble circle can be seen.

Particular Important titles include...

How to run a remote X window Client

X Event Binding and Using

Authorizations and Security
It is old, but every bit as relevent today as it was when written

History of X windows (short)

 Name                    Description
 Applications.hints      Specific Application Hints and Tips
 Bitmap_Drawing          Problems with Drawing Bitmaps under X
 CDE.hints               CDE & DtLogin Info (User Orientated)
 CDE_Solaris_notes.txt   CDE Under Solaris (System Orientated)
 CTwm.colors.hints       CTwm color suggestions
 CTwm.hints              CTwm Hints and Tips
 Colors.hints            X Colors/Colormap Programming
 DECwindow.hints         DEC Windows Problems
 Display.needs           How to run a remote X window Client
 Environment.hints       X Window Environment variables
 Event_Handling.txt      X Event Binding and Handling
 FontServers.hints       X Font Server Notes
 Fonts.XF86v4_problem    X Font Problem under XF86 version 4
 Fonts.hints             X Fonts Information
 Gnome.hints             
 History                 History of X windows (short)
 Icon_Recolor            Reducing Icon Colors
 Imakefile.hints         Imakefile Hints
 KDM.hints               KDM Infomation and Modifications
 Keysyms.hints           XKeysyms, Information
 MacX.hints              Macintosh X setup (MacX)
 Motif.hints             Motif Window Manager Hints
 NCD.hints               NCD XTerminal Hints and Tips
 Pixmap_Editors          A study of the numerious Pixmap Editors
 Programing.hints        General X Programming
 Resources.hints         X Resources Hints and Tips
 Scripts.hints           X Scripts - ideas and kludges
 Security                Authorizations and Security
 Tk.hints                Tcl/Tk X Toolket Programming
 Twm.colors.hints        Twm color suggestions
 Twm.hints               Twm Hints and Tips
 User.hints              General User Hints
 Widget.hints            Xt Widget Programming
 WindowID.hints          
 X.gif                   
 XDM.hints               XDM Infomation and Modifications
 XSun.hints              MIT XSun server Modifications and Bugs
 XView.hints             Sun Openlook and XView Problems
 Xterm.ctlseqs.txt       Xterm Control Sequences  (XF86)
 Xterm.hints             
 Xterm.slave.hints       Opening a Xterm as an appl sub-window
 Xterm_paste_problem.txt Xterm Paste Text Problem
 Xterm_xf86.terminfo     Xterm terminfo source file  (XF86)
 XtextKeys               Athena Text Widget Keys Summary
 pbmplus.summary         PbmPlus Programs Summary
 progs.summary           Local X Client Summary
 xdmR4.README            
 xdmR4.patch01           
 xdmR4.patch02           
 xplaces.help            Xplaces to Setup Display  (Yuck!)

You can go..