>>>>Greg,
>>>>
>>>>Thanks a lot. I've been reading yesterday your paper, this is how I figured the first part.
>>>
>>>I's not difficult .... once you get past the basics
>>
>>The hard part is to remember it all the next time you need it, six years later.
>
>A manual helps

In this case, I prefer an automatic :). I.e. a little bag of tricks, examples and stuff I already did when I needed it. The hard part of the hard part is to remember where did I use that, i.e. in which old project was that.