[Koha] Rancor macros

Hi all We've been happily using Rancor for bibliographic MARC editing for close to a year. We also have a few simple macros (for example to add RDA 33X tags, or to move system numbers from 001/003 to 035). Does anyone know whether we can write a macro that will (for example) delete tags with a specific value in the 2nd indicator? (for example, 650 tags with indicators _7). With kind regards from the Dalton McCaughey Library Team Carlos Lopez Dalton McCaughey Library | 29 College Crescent, Parkville, VICTORIA 3052 Ph: 03 9340 8888 ext.1 | library@dml.vic.edu.au | library.dmlibrary.org.au