4, 0, 0,
(SCM a, SCM iv, SCM t, SCM p),
"Make a bracket in direction@tie{}@var{a}. The extent of the"
- " bracket is given by @var{iv}. The wings protude by an amount"
+ " bracket is given by @var{iv}. The wings protrude by an amount"
" of@tie{}@var{p}, which may be negative. The thickness is given"
" by@tie{}@var{t}.")
{