"If what counts most in communication is pattern and its variations, we can look again at the many surfaces and repetitions in Martin's work: in format, medium, mark, measurement. The square itself, as the artist well knew, is the most repetitious of linear lay-outs; each defining dimension repeats the next. That's why she used the square for her basic setup, as well as why she famously credited it with an 'unpleasant' power, which she actively opposed by dividing her canvas into rectangular units."