How to copy a answer before sending it

[Juha]

Just lost an answer while posting it. It wasn't first time and it's rather annoying to lost one hour work while knowing that I'll not have time to do it again for a while. I wrote a longer answer than I originally planned and my laptop began to run rather hot, so I suspected trouble but I could not figure out how to back-up the answer for an another try if the posting would not succeed. So how one can copy or save one's answer before posting it?

Sorry Kalender1973 and Stig, I'll try to find time to answer on Hyvönen's book at weekend.

Juha