The original version A08-m1d: the abstract as provided in the original article, to which we have only added links, so that the abstract refers at least to each of the main modules.
An alternative version A08-m1d2, which summarises more explicitly the contents of the different main modules. In particular, we have added a summary of the Positioning and the Outcome. The results of the measurements and calculation of the differential cross section are presented in the form that provides the best overview: a small figure. We have also indicated in this version that the differential cross sections are calculated via the deflecion function, because that step in the calculation is addressed in a separate module.
The question how abstracts can be improved, in particular in an electronic and modular environment, is addressed in (Van der Tol, 1999).
Because the abstract provides an important overview of the article as a whole, we have created a starting point of the essay-type in this module, in addition to the starting point at `the top of the article', in the module meta-information m1.