I have a standard master thconfig file that contains two layouts, water-blue (copied from the rabbit cave example) and StandardLayout. I have other thconfig files that refer to the master file with an input command, as below; input ../StdFiles/thconfig-StdLayouts.thc copy water-blue # adopt blue water colour layout from 'input' file copy StandardLayout # adopt standard layout from 'input' file This works fine, except that when my StandardLayout contains, for example; symbol-set UIS # UIS, ASF, CCNP, SKBB then the symbol set always overrides and I don't get my blue fill colour. I have tried changing the order of the two 'copy' commands above, to no avail. There maybe something about this in the Therion Book but I'm not sure I understand it. For now I'm happy to leave out the 'symbol-set' command, but I foresee the day when I would adopt one of the other symbol sets and make personalised changes (such as water-blue). Any comments? Bruce