A help interface which supports Netscape Navigator in addition to Mosaic. Several new layout parameters for customizing the sizes of plot regions. Files ending in '.gz' are compressed with the GNU 'gzip' program. The binary for your machine can be installed somewhere in your path as 'gzip'. Otherwise, if you wish to build 'gzip' from the source, it will need to be compiled and installed according to instructions in the tar file.
Zebra is available in both source and binary form.
Normally you will only need one or the other, not both. The Sun binary distributions require that the OpenWindows shared X libraries be installed on the system. You may wish to start by obtaining and printing Install.ps, a PostScript document containing the installation instructions. Release.ps contains the 4.2 release notes. AND you do not want to use the RDSS source included with Zebra.