"Mustard Dollops'' (handwoven textile), by Gabrielle Ferreira, in the group show "Seeking the Line,'' at Dedee Shattuck Gallery, Westport, Mass. The "Line" refers to the mixed media and textile renderings by four exhibiting artists who have created "rich compositions in the process of studying the power of the line,'' the gallery says. Ferrerira is a textile artist influenced by her Cape Verdean and Portuguese heritage.