Dear Latex3-Team, I have now succesfully used xor for producing 3-column output with book.cls. Attached you will find my changes/additions to the current xor. * fixed horizontal float placement for starting column >1 * added hooks for header/footer * added compatibility for old marks * added \totalwidth for correct header/footer sizing * added \floatwidth for float scaling I will probably do some more refinement on the header/footer stuff, but would appreciate some input on the interface design first. Otherwise, if you would like to include parts of this patches, feel free to do so. Regards, Björn -- Bjoern Pedersen Lichtenbergstr.1 Technische Universitaet Muenchen D-85747 Garching ZBE Instrumentierung FRM-II Tel. + 49 89 289-14707 Fax -14666