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AIX Version 4.3 Differences Guide

AIX Version 4.3 Differences Guide

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• Inter-Client Exchange Library<br />

• X Session Management Protocol<br />

• X Session Management Library<br />

• Input Method Protocol<br />

• X Logical Font Descriptions (update)<br />

• SYNC Extension<br />

• XTEST Extension<br />

• BIG-REQUESTS Extension<br />

• XC-MISC Extension<br />

• X Keyboard Extension (XKB)<br />

• RECORD Extension<br />

• Double Buffer Extension (DBE)<br />

• ICE X Rendezvous<br />

• Print Extension<br />

• Xlib Vertical Writing and User-Defined Characters<br />

8.2.1 X11 Security<br />

The X11R6 implementation provides five access control mechanisms, of which<br />

the two listed below are supported in <strong>AIX</strong> <strong>4.3</strong>:<br />

Host Access<br />

Any client on a host in the host access control list is allowed access to<br />

the X-server. The access control list is changed with the xhost<br />

command.<br />

MIT-MAGIC-COOKIE-1<br />

A 128-bit plain-text cookie is provided by the client with the connection<br />

setup information. The xdm program automatically configures the<br />

X-server and client for each new login session.<br />

8.2.2 X Image Extension<br />

The sample implementation in Release 6 is a complete implementation of the full<br />

XIE 5.0 protocol except for the following techniques that are excluded from the<br />

sample implementation:<br />

• ColorAlloc: Match, Requantize<br />

• Convolve: Replicate<br />

• Decode: JPEG (lossless)<br />

• Encode: JPEG (lossless)<br />

• Geometry: AntialiasByArea, AntialiasByLowpass<br />

8.2.3 Inter-Client Communications Conventions Manual<br />

X11 Release 6 includes <strong>Version</strong> 2.0 of the Inter-Client Communications<br />

Conventions Manual (ICCCM). This version contains a large number of changes<br />

and clarifications in the areas of window management, selections, session<br />

management, and resource sharing.<br />

Graphical Environment Enhancements 193

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