(excerpt from HylaFAX FAQ, http://www.hylafax.org/content/About_HylaFAX) HylaFAX is a facsimile system for UNIX systems. It supports: o sending facsimile o receiving facsimile o polled retrieval of facsimile o transparent shared data use of the modem o sending messages to pagers Facsimile can be any size (e.g. A4, B4), either 98 or 196 lpi, and transmitted/received as either 1D-encoded or 2D-encoded facsimile data (2D-encoded data is frequently more compact and hence takes a shorter time to communicate). Any modem that supports one of the standard interfaces for facsimile operation can be used; i.e. any Class 1, Class 2, or Class 2.0 modem.