@cindex percussion clef
Note that the normal notation of pitches (such as @code{cis4}) in a
-@code{DrumStaff} context will cause an error message. Percussion clefs
+@code{DrumStaff} context will cause an error message. Percussion clefs
are added automatically to a @code{DrumStaff} context but they can also
be set explicitly. Other clefs may be used as well.
% It also defines the positions of the two lines.
\override Staff.StaffSymbol #'line-positions = #'(-2 3)
- % This is neccessary; if not entered, the barline would be too short!
+ % This is necessary; if not entered, the barline would be too short!
\override Staff.BarLine #'bar-size = #3
}