\entry{define}{10}{\code {define}}
\entry{undefine}{12}{\code {undefine}}
\entry{defn}{12}{\code {defn}}
\entry{popdef}{13}{\code {popdef}}
\entry{pushdef}{13}{\code {pushdef}}
\entry{indir}{14}{\code {indir}}
\entry{builtin}{14}{\code {builtin}}
\entry{ifdef}{15}{\code {ifdef}}
\entry{ifelse}{15}{\code {ifelse}}
\entry{shift}{16}{\code {shift}}
\entry{dumpdef}{18}{\code {dumpdef}}
\entry{traceon}{18}{\code {traceon}}
\entry{traceoff}{18}{\code {traceoff}}
\entry{debugmode}{19}{\code {debugmode}}
\entry{debugfile}{20}{\code {debugfile}}
\entry{dnl}{21}{\code {dnl}}
\entry{changequote}{21}{\code {changequote}}
\entry{changecom}{22}{\code {changecom}}
\entry{changeword}{22}{\code {changeword}}
\entry{m4wrap}{24}{\code {m4wrap}}
\entry{include}{25}{\code {include}}
\entry{sinclude}{25}{\code {sinclude}}
\entry{divert}{27}{\code {divert}}
\entry{undivert}{28}{\code {undivert}}
\entry{divnum}{29}{\code {divnum}}
\entry{len}{31}{\code {len}}
\entry{index}{31}{\code {index}}
\entry{regexp}{31}{\code {regexp}}
\entry{substr}{32}{\code {substr}}
\entry{translit}{32}{\code {translit}}
\entry{patsubst}{33}{\code {patsubst}}
\entry{format}{33}{\code {format}}
\entry{incr}{35}{\code {incr}}
\entry{decr}{35}{\code {decr}}
\entry{eval}{35}{\code {eval}}
\entry{syscmd}{38}{\code {syscmd}}
\entry{esyscmd}{38}{\code {esyscmd}}
\entry{sysval}{38}{\code {sysval}}
\entry{maketemp}{39}{\code {maketemp}}
\entry{errprint}{40}{\code {errprint}}
\entry{file}{40}{\code {file}}
\entry{line}{40}{\code {line}}
\entry{m4exit}{40}{\code {m4exit}}
\entry{gnu}{44}{\code {gnu}}
\entry{unix}{44}{\code {unix}}

.