Guided Tour

Implementation

Combination of C, Tcl/Tk, ClassyTcl/Tk
Very portable (currently Unix and MS Windows)
Can be extended and scripted
Each base is a canvas object that can be individually addressed
Tags on bases keep track of which part of which structure the base belongs to
Multiple structures on one page
Depending on the selection mode, individual bases, segments, helices, trees or structures can be manipulated
Allows pseudo knots

GUI

Hypertext help

Native look and feel (mostly)

Features: zoom, undo/redo, print, copy/paste,

Fully customizable

Batch work possible