I installed TeX Live. It had originally asked what I wanted the default paper size to be. I forgot to change it from A4 to Letter. Now the default paper size is A4.
How can I change the default size to Letter now that it is installed? The installation took several hours so I do not want to go through it again.
When setting a default paper size during set up what exactly happens during install?
I realize that I can specify a paper size in the header of the document but am trying to set the default to what it should have been.