B. Koa
barfi.koa@gmail.com
If the input file of Firefly includes external basis sets and ECPs, no graphical interface will be able to edit/show it. I examined chemcraft and MaSK. Certainely, one can delete the basis sets and ECPs; and then after editing or viewing the file, add them again. But when a file includes many atoms this work is not a good idea. If there is a graphical program which can edit/view such files, I would be glad to here about.
B. Koa