Official language question!

Greetings,

I was in a second-hand book shop yesterday afternoon and came across a copy
of the old "Teach Yourself Dutch" for $2, so I bought it. Not a bad deal, I
thought! Anyway, the first chapter, which deals with pronunciation and
spelling, makes reference to a spelling reform in 1947 which cleaned up the
"cumbersome and old-fashioned" spelling which had been used up until that
time. That piqued my curiosity, so I was wondering if any of our Dutch
listmembers would be able to give any details of that old orthography, and
how it differs from the current one.

Dank je wel! :)

Thomas