def initialize
add_commands("\\"=>:backslash)
add_commands("entity", "stackrel", "frac", "sqrt", "mbox")
add_multi_command(:hat_etc, 'hat', 'breve', 'grave', 'acute', 'dot', 'ddot', 'tilde', 'bar', 'vec', 'check', 'widehat', 'overline', 'widetilde', 'overbrace')
add_multi_command(:underbrace_etc, 'underbrace', 'underline')
add_multi_command(:quad_etc, " ", "quad", "qquad", ",", ":", ";", "!")
add_multi_command(:it_etc, "it", "rm", "bf")
add_multi_command(:mathit_etc, "mathit", "mathrm", "mathbf", "bm", "mathbb", "mathscr", "mathfrak")
add_sym_cmd(Builtin::Symbol::MAP)
add_delimiter(Builtin::Symbol::DELIMITERS)
super
end