TFormDesigner, TReadComponent...

where oh where can I find more information about TFormDesigner,
TReadComponent and TWriteComponent?  I have all the acrobat stuff,
nothing seems to be in any of these documents, and the CWG and
Associated help are pretty much worthless in the syntax and examples
department.

If you've got a source for info please let me know!

TIA,

JimT