'''[http://staden.sourceforge.net/%|%Staden]''', by [James Bonfield] et al.,
is a fully-developed set of DNA sequence assembly (Gap4 and Gap5) editing and
analysis tools (Spin) for [Unix], [Linux], and [Mac OS X%|%OS X].  It sports
a [Tk] [GUI] and exposes [Tcl] for extending the program.


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