NCBI Sequence Viewer provides a graphical view of sequences and color-coded annotations on regions of sequence stored in the Nucleotide and Protein databases. Sequence Viewer has recently been updated and now has better loading and management of uploaded custom tracks, improved naming of downloaded files including sequence ranges and file extensions, and easier embedding in external Web sites.
A full list of new features, improvements and fixes is available at: http://www.ncbi.nlm.nih.gov/tools/sviewer/release-notes/
