This is an updated version of the ORCALib library suitable for use with GNO 2.0.6. For those library functions that it implements, it contains the same updates and fixes as the standard version of ORCALib included with ORCA/C 2.2.0 B4. However, under GNO, some portions of the C standard library are implemented by GNO's libc rather than by ORCALib, and so updating ORCALib will not affect those library functions. This applies to all of , as well as to certain other functions. This library update is intended for use with ORCA/C 2.2.0 B4, but it should also be compatible with ORCA/C versions back to 2.1. To install the update, copy the new version of ORCALib into the /lib directory, replacing the version provided with GNO 2.0.6.