Not all computers are the same, and not all operating systems offer the same capabilities and under the same names, though there is an extensive set of standard capabilities with standard names. Those subroutines, functions, status functions, and global variables that require capabilities that your computer system does not offer cannot be made available in your version of LUX. When you’re installing LUX, then the configuration script tests your system to see which key capabilities it has and which ones it lacks, and routines and such are correspondingly included or omitted from your version of LUX.
We say that those routines and such that depend on the availability of a certain key capability are part of the same package. Some routines may be part of more than one package. Below, we list the packages that are currently recognized.
See also: Installing LUX