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This week I have completed the "X Window Internals" tutorial. It is found at http://xwindow.angelfire.com/ This tutorial aims to fill the gap of Linux and other Unix-like systems source code commentaries when it comes to the graphic system. Although there is huge bibliography in the net and the textbooks for topics like Unix system programming, kernel programming, open source code, etc, I think there are not adequate references about the X11 graphics system internals. What my text provides is a study of the X server starting from main() and the interaction with the X Client and the input/output devices. Some of the strong points are: a complete example of a client request and the X server dispatching of the same Xlib request. I go as deep as much I could to the device drivers interface, for instance the screen driver and the mouse driver. The relationship of the framebuffers with the video card memory is explored. The mouse events creation and the compete path in the source until the events reach the client is followed. Some of the graphics Context operations that take place in the frame buffers are also examined. Christos Karayiannis

Depending on the business and industry, spreadsheets can be anything from very simple lists used for sorting to kazillion cell monsters that add, multiply, and figure up gravitational forces throughout the entire universe. Rob Reilly steps through some basic yet very useful features of OpenOffice Calc for those not familiar with this powerful tool.

X isn't only about graphics: James gives an overview of the powerful features in the X window system for running programs remotely.

As Linux is brought into service in small and medium sized companies, desktop pilots often wonder how they will ever get off the ground without proprietary word processing applications like Word. "Can I still do basic business letters with Linux?" And "Will our old Word docs work with Linux?", they ask. The answer to both questions is a resounding "You betcha" with OpenOffice.org Writer.

This HOWTO describes how you can use the combination of X Display Manager (xdm, kdm and gdm) and XDMCP (X Display Manager Control Protocol) to provide the mechanism for an X terminal and a platform of cheap remote X apps solution. This document will be focusing on how to setup connection using XDMCP.

This HOWTO, maintained by Hal Burgiss, tells how to improve ugly and unreadable X Window fonts. It includes various tips for improving font handling for XFree86, including sections on fonts servers, TrueType fonts, Netscape, and related topics.

In this introductory column, Michael Hall explores the basics of GNOME: how to get it, how to install it, and how to tweak it.