If you click on the timestamp of a comment there is an additional option to favo...

411111111111111 on June 25, 2022 | parent | context | favorite | on: ffsend: A fully featured Firefox Send command line...

If you click on the timestamp of a comment there is an additional option to favourite a comment. These are then visible from your profile until you remove this toggle

m348e912 on June 26, 2022 [–]

thx!