I have bitcoinQT with some coins on it. I want to use the internet on a regular basis from this computer. I do not trust the authors of internet applications and commercial operating systems. I especially do not trust the manufacturers of printers. I also do not trust that there will never come a day when burglars (or polite young men with a writ, same thing) with guns break into my home and take away all computing devices and storage media they can find.
It is my intent to use a pen and paper to write down public key and address, and destroy all trace of bitcoin addresses currently holding value from all electronic media. That which is not stored electronically - at all - is secure from all possible electronic snoops and all possible thieves of equipment, as well as from equipment malfunction. That which does not exist, even in encrypted form on storage media, cannot even be shown to have ever existed.
But having done so -- what exactly do I need to type, at keyboard, into a text file, to create something that bitcoinQT, when started with no known wallet on the machine (as though for the first time) knows how to import? What exact format? And how exactly do I tell bitcoinQT to import it?