With xfig figures are drawn using objects such as circles, boxes, lines, spline curves, and text. Images can be imported, supporting formats such as gif, jpg, and eps.
Xfig saves its figures in its native Fig format that may be converted into various formats such as eps, gif, and jpg
Other applications can produce output in the Fig format, including gnuplot and xgraph, both of which can generate graphs direct from the corresponding data. Alternatively, pstoedit can generate input suitable for editting with Xfig.