It should suffice to change to the book's top level directory
(e.g. .../Springer1/trunk/Book1)
and run bcStangle(). This function is specialized to its one purpose given in the title.
It is not envisaged that it could be useful beyond, or even replace Stangle.
tangleToSingleFiles creates a directory named Rfiles and tangles
each chapter separately into this directory. You must have the current
working directory set to the top level directory of the book
(Springer/Book1).