#epilog="""With <query> you select the range of record/docnames/single files to work on. Note that some actions e.g. delete, append, revise etc. works at the docname level, while others like --set-comment, --set-description, at single file level and other can be applied in an iterative way to many records in a single run. Note that specifing docid(2) takes precedence over recid(2) which in turns takes precedence over pattern/collection search.""",