The GNU wdiff source package contains sources for a number of tools besides wdiff itself. These are considered experimental: they might work for you, but they might just as well fail. The following programs are considered experimental:
Building these applications can be configured at build time by passing --with-experimental to the configure script.
For this build, they have been enabled. If you encounter a bug in an experimental program, the maintainers would still like to learn about it, but there is a greater chance that they decide not to fix such issues unless you provide a patch as well.