Dear Colleagues, does anyone know about a commonly available set of FORTRAN subroutines allowing for the handling of structures, structure analysis (ring percetion, aromaticity, etc.) and decomposition of structures into substructures? -- Regards Andreas Klamt COSMOlogic GmbH&Co.KG Burscheider Str. 515 51381 Leverkusen, Germany Tel.: 49-2171-73168-1 Fax: ...-9 e-mail: andreas.klamt -AatT- cosmologic.de web: www.cosmologic.de