The polyxedit module: the sequence editor. This figure illustrates one of the original features of the polymer sequence editor. The user might configure the software in such a way that the graphical representation of the monomers of a polymer sequence be performed in distinct manners depending on the polymer chemistry. As visible on the figure, the left window represent a protein sequence with each monomer being represented using its 1-letter code. The right window represent an oligosaccharide, for which each monomer is represented with its own chemical formula. The configurability of the display is almost unlimited. Operating the editor feels exactly like using an ordinary text editor. Selection of sequence portions leads to the drawing of a selection polygon with a transparent area (shown in the right sequence editor window screen dump).