superscripting
/ˈsuːpəskrɪptɪŋ/ /ˈsjuːpəskrɪptɪŋ/noun
The action of providing with a superscript or superscripts; the creation or use of superscripts, now especially in electronic text.
Origin
1970s; earliest use found in Language. From superscript + -ing. Compare earlier superscripted.