@fotf .....\bode.m .....\display.m .....\eq.m .....\feedback.m .....\fotf.m .....\glfdiff.m .....\impulse.m .....\lsim.m .....\mrdivide.m .....\mtimes.m .....\nichols.m .....\nyquist.m .....\oustafod_appro.m .....\plus.m .....\step.m .....\subsref.m .....\unique.m