Copy ready formatted MARC data for a concept

[joelit]

This is an enhancement request for a concept page where the vocabulary is used for subject indexing in MARC21 format. We could have a plugin that produces some commonly needed strings, such as cat|2yso/eng|0http://www.yso.fi/onto/yso/p19378 for the page https://finto.fi/yso/fi/page/p19378?clang=en

But what would the most commonly used strings be?