 Furthermore, data sets tend to be too large to be conveniently put on paper, and they are more easily searched in soft-copy form.Assembly-code listings are occasionally analysed by programmers who want to understand how a compiler is translating their source code into assembly language.For example, the GNU C Compiler (gcc) will produce an assembly code listing if it is invoked with the command-line option -S.

Listings of computer programs are still important in US patent law.