You're welcome. It occurs to me that in the first case you use the preposition "for" and in the second case you use "to" so if the person said "for" they probably meant that they wanted to know how to spell a certain word.
Yes, good point.But what if someone had just told you a joke you didn't get. Wouldn't you then say 'I don't get it, spell it out for me' and not 'to me'?
In a recent word forum talk some body said
"Spell it out for me someone."
What does this phrase actually mean. I would have spelled it out to them if i actually knew what it meant!