Possibility to merge two specification files via diff window

[usmanovbf]

Hi! I want to have a possibility to merge two specification files, e.g.http://joxi.ru/Vm6LpbjiDb3qMA, by known and standard diff-like window with two sides. It is important for me because now I work by the branch-like way when I create a copy of the original spec file. After changing this copy I paste it into the source. On this step, I need to use external diff-like comparing tools. I want to have a possibility to do all of this steps on Stoplight

[usmanovbf]

And before the merge, it will be good to fork existing spec file by clicking on a button and then typing an additional suffix to copied source spec file name