These patches are intended for use with the sky preset libraries that are included on the MetaTools' Bryce Accessory Kit CD.
Their use is pretty straightforward, use patch #1 on sky library #1 and save it to your hard drive, then import the resulting file into your Bryce sky library
Some users have reported a problem with these presets where, after being imported, the sky selected from the library would not be the one that shows up in the rendered scene. This problem was originally found with the sky preset libraries that were included on the Bryce 2.1 cd, and I described a couple of fixes that utilize resedit at that time. Realizing that some people aren't comfortable using resedit, I thought I'd make a set of patches for the accessory kit files.
So, here you go.
I have also made a patch for the sky library that was included on the Bryce 2.1 cd, you should be able to find it it the same place that you found this one.