As with many standards, you can find an unofficial 'final committee draft' for free if you look around. It doesn't prescribe a layout for keys other than the cursor arrows.

ISO9995 has been responsible for a lot of nonsense from a programmer's point of view — for instance mandating Control in the lower left rather than beside A. Similarly its sister ISO9241, despite nominally being concerned with ergonomics, helped drive some of the best key switches off the market.