Excerpt from the XFree86 Changelog for 3.1.2G

The following is a list of things changed between 3.1.2F and 3.1.2G, as a reference for you to check whether you need 3.1.2G at all. This is not the complete changelog file. Note that no. 773 (OS/2 updates) is nothing worth to have - these are actually the patches which were already applied to 3.1.2F and submitted later into the official code base.

XFree86 3.1.2G (3 September 1996)

XFree86 3.1.2Fc (3 September 1996)

XFree86 3.1.2Fb (1 September 1996)

XFree86 3.1.2Fa (31 August 1996)

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