Hi I'm working with Koha 16.05.05. I'm trying to change a copy of the standard framework. To catalogue sets with volumes we will need to unhide MARC field 773 in the framework. It is no problem to unhide 773 $w by clicking on "Advanced constraints" and marking the field "Editor", the click "Save changes". But also $t (for the title) is needed. There, when clicking on "Advanced constraints", nothing happens, so the tab will not open to mark the field "Editor". Instead, if "Basic constraints" is open, it will close "Basic constraints", but still "Advanced constraints" will not open. I also tried to unload the framework as an XML file and to edit it with vi - unfortunately the file has about 4.4 million characters in only 28 lines! vi seems not to be able to edit a file with such extremely long lines and just gets stuck, eating up 100% of cpu. Except on my own Koha installation I also tested this on the Catalyst demo installtion, it is same thing there. * http://demo-intra.mykoha.co.nz/ How to solve this? Is this a bug? Best wishes: Michael -- Geschäftsführer · Diplombibliothekar BBS, Informatiker eidg. Fachausweis Admin Kuhn GmbH · Pappelstrasse 20 · 4123 Allschwil · Schweiz T 0041 (0)61 261 55 61 · E mik@adminkuhn.ch · W www.adminkuhn.ch