Level 3 with Compact Flash
That's the library done. "Library" is the original storage point for Econet library utilities, but should now be used exclusively for BBC Model B utilities. When the Master came out, new versions of many of the utilities were required. One of the reasons for this was that some space was reserved in the private RAM beginning at location &DD00 in the memory map for Econet workspace, so library utilities could be loaded there instead of corrupting the beginning of the user RAM.