User:Kurousagi/AddCustomLink.js

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This user script seems to have a documentation page at User:Kurousagi/AddCustomLink.

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addPortletLink(
  "p-personal", //Indicates where the link goes- the top bar, in this case
  "https://meta.wikimedia.org/wiki/Steward_requests/Username_changes#Dakarias.40global",
  "Username change status",
  "Custom link ID- you can leave this the way it is",
  "HRNG",
  "", //I'm still not sure what this does, to be honest- feel free to experiment using a copy of this script.
  document.getElementById("pt-logout")); //Adds the link before the Log out button.