Question Author
Thank you Sibton, That is exactly what I meant.
Stressed out because my computer decided to download a Windows update and automatically performed a restart. I was offered a 'Restore Previous Session' by Internet Explorer but it just froze the whole system and I had to do yet another restart. My 8pm post therefore became an 8:27 panic.
I shall now reture to the potting shed and seek ot a bottle of whisky that I believe is hidden behind the cloches.