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I'm planning on expanding the GDT article, particularly for two reasons: 1) To change the confusing naming of the GDT pointer structure from 'GDT Descriptor' (as descriptors are the entries within the table, rather than the pointer to the table itself) and 2) to add information on x86_64 and system segment types.

Unfortunately, a lot of this information is contained within .png pictures within the article. My graphics editing knowledge is insufficient to be able to easily modify these and keep the original style intact (fonts, line widths etc) without the original vector graphics file. So what I'm really looking for is either the original files, or maybe a consensus on whether these pictures should be continued to used in the wiki, given the difficulty of editing them later if the original author is no longer active on the forums.

Regards,
John.

GDT structure and GDTR(pseudo descriptor) is very well documented on the manual (section 3.5-SYSTEM DESCRIPTOR TYPES).

I suggest just state some hints on the wiki of how to acquire such information, and perhaps further explain some detail or FAQ, instead of redrawing things that already in the manual.