Feather: Teaching tcl objects to fly

Feather is a set of extensions which enhances the capabilities and exibility of Tcl objects, builds a framework around them to enable new data types to be easily added and also provides a rich set of new data types. This paper starts off by giving quite a detailed description of how Tcl objects work and then moves on to describe the features of Feather, how they work and what they can be used for.