lfs-book/appendixa/bison-desc.xml

<sect2><title>&nbsp;</title><para>&nbsp;</para></sect2>

<sect2><title>Short descriptions</title>

<para><command>bison</command> generates, from a series of rules, a program
for analyzing the structure of text files. Bison is a replacement for yacc
(Yet Another Compiler Compiler).</para>

<para><command>yacc</command> is a wrapper for bison, meant for programs
that still call yacc instead of bison. It calls bison with the -y option.</para>

</sect2>