This version of DATANODE differs in a few properties from the original version, since some less-used support modules were removed: HDS, HDX, NDX, and AST. Please file a bug report if you think that some of this support shall be brought back. Also, the Debian version uses external libraries which are different from the libraries shipped with the original distribution, with the fits Java library (nom.tam.fits; libfits-java) as an example. This may trigger bugs that do not appear in the original version. Please report problems with the Debian version of topcat to the Debian bug database with the `reportbug` tool. Ole Streicher