http://www.perlmonks.org?node_id=509172


in reply to Re: The most useless key on my keyboard is:
in thread The most useless key on my keyboard is:

Normally, the cursor keys change the cursor position. When Scroll Lock is on, the cursor keys move the view instead. In other words, Scroll Lock causes the cursor keys to act like they do when viewing an HTML page in Firefox and IE. Spreadsheet software usually support it.