You may have used an old account on your machine and now wish to remove it from History.

Accounts take up display resources even if you don't select them.


Solution:
Delete your old accounts.

Go to the savedvariables folder and copy the history.lua file somewhere safe.
The script makes a backup into a subfolder History_bak. You can totally trust that, Right?!  Nope.


Start the iuplua53.exe  console
Use the "Load" button, navigate to the history folder and select  Delete-Account.lua
Click "Execute".


Select an Account to be deleted.
Confirm.

Close the iuplua console.