\initial {A}
\entry {arguments to macros}{8}
\entry {Arguments to macros}{10}
\entry {arguments to macros, special}{11}
\entry {arguments, quoted macro}{9}
\entry {arithmetic}{35}
\initial {B}
\entry {builtins, indirect call of}{14}
\initial {C}
\entry {call of builtins, indirect}{14}
\entry {call of macros, indirect}{14}
\entry {changing comment delimiters}{22}
\entry {changing the quote delimiters}{21}
\entry {characters, translating}{32}
\entry {command line, filenames on the}{5}
\entry {command line, macro definitions on the}{4}
\entry {command line, options}{2}
\entry {commands, exit code from UNIX}{38}
\entry {commands, running UNIX}{38}
\entry {comment delimiters, changing}{22}
\entry {comments}{6}
\entry {comments, copied to output}{22}
\entry {comparing strings}{15}
\entry {compatibility}{43}
\entry {conditionals}{15}
\entry {controlling debugging output}{19}
\entry {counting loops}{16}
\initial {D}
\entry {debugging output, controlling}{19}
\entry {debugging output, saving}{20}
\entry {decrement operator}{35}
\entry {defining new macros}{10}
\entry {definitions, displaying macro}{18}
\entry {deleting macros}{12}
\entry {deleting whitespace in input}{21}
\entry {discarding diverted text}{29}
\entry {displaying macro definitions}{18}
\entry {diversion numbers}{29}
\entry {diverted text, discarding}{29}
\entry {diverting output to files}{27}
\entry {dumping into frozen file}{41}
\initial {E}
\entry {error messages, printing}{40}
\entry {evaluation, of integer expressions}{35}
\entry {executing UNIX commands}{38}
\entry {exit code from UNIX commands}{38}
\entry {exiting from \code {m4}}{40}
\entry {expansion of macros}{9}
\entry {expansion, tracing macro}{18}
\entry {expressions, evaluation of integer}{35}
\entry {extracting substrings}{32}
\initial {F}
\entry {fast loading of frozen files}{41}
\entry {file inclusion}{25, 28}
\entry {filenames, on the command line}{5}
\entry {files, diverting output to}{27}
\entry {files, names of temporary}{39}
\entry {forloops}{16}
\entry {formatted output}{33}
\entry {frozen files for fast loading}{41}
\initial {G}
\entry {GNU extensions}{10, 14, 19, 20, 26, 28, 31, 33, 38, 41, 43}
\initial {I}
\entry {included files, search path for}{26}
\entry {inclusion, of files}{25, 28}
\entry {increment operator}{35}
\entry {indirect call of builtins}{14}
\entry {indirect call of macros}{14}
\entry {initialization, frozen states}{41}
\entry {input tokens}{6}
\entry {input, saving}{24}
\entry {integer arithmetic}{35}
\entry {integer expression evaluation}{35}
\initial {L}
\entry {length of strings}{31}
\entry {lexical structure of words}{22}
\entry {loops}{16}
\entry {loops, counting}{16}
\initial {M}
\entry {macro definitions, on the command line}{4}
\entry {macro expansion, tracing}{18}
\entry {macro invocation}{7}
\entry {macros, arguments to}{8, 10}
\entry {macros, displaying definitions}{18}
\entry {macros, expansion of}{9}
\entry {macros, how to define new}{10}
\entry {macros, how to delete}{12}
\entry {macros, how to rename}{12}
\entry {macros, indirect call of}{14}
\entry {macros, quoted arguments to}{9}
\entry {macros, recursive}{16}
\entry {macros, special arguments to}{11}
\entry {macros, temporary redefinition of}{13}
\entry {messages, printing error}{40}
\entry {multibranches}{15}
\initial {N}
\entry {names}{6}
\initial {O}
\entry {options, command line}{2}
\entry {output, diverting to files}{27}
\entry {output, formatted}{33}
\entry {output, saving debugging}{20}
\initial {P}
\entry {pattern substitution}{33}
\entry {printing error messages}{40}
\initial {Q}
\entry {quote delimiters, changing the}{21}
\entry {quoted macro arguments}{9}
\entry {quoted string}{6}
\initial {R}
\entry {recursive macros}{16}
\entry {redefinition of macros, temporary}{13}
\entry {regular expressions}{31, 33}
\entry {reloading a frozen file}{41}
\entry {renaming macros}{12}
\entry {running UNIX commands}{38}
\initial {S}
\entry {saving debugging output}{20}
\entry {saving input}{24}
\entry {search path for included files}{26}
\entry {special arguments to macros}{11}
\entry {strings, length of}{31}
\entry {substitution by regular expression}{33}
\entry {substrings, extracting}{32}
\initial {T}
\entry {temporary filenames}{39}
\entry {temporary redefinition of macros}{13}
\entry {tokens}{6}
\entry {tracing macro expansion}{18}
\entry {translating characters}{32}
\initial {U}
\entry {undefining macros}{12}
\entry {UNIX commands, exit code from}{38}
\entry {UNIX commands, running}{38}
\initial {W}
\entry {words, lexical structure of}{22}