Hi all, Something I've not needed to do until now is define a new file format in Galaxy. I understand the basic principle and defining a subclass in Python... however, how does this work with new tools on the Tool Shed? In particular, if an output format is likely to be used by more than one tool, can we get it added to the Galaxy core? As an example, the basic functionality of the Blast2GO for pipelines tool (b2g4pipe) takes a BLAST XML input file, and gives a tab separated annotation output file. Galaxy already has 'blastxml' and 'tabular' file formats defined, so I didn't need to do anything extra. However, the tool can also take (a directory of) InterProScan XML files as input, so here a new 'interproscanxml' format would useful. Then any wrapper using or producing InterProScan XML could take advantage of this. e.g. Konrad's InterProScan wrapper could then offer the XML output as an option in addition to or instead of the tabular output. Related to this example, why isn't there a generic base class for XML formats in general? https://bitbucket.org/galaxy/galaxy-central/issue/568/missing-xml-datatype-b... Regards, Peter