Many thanks Alexey,
You are right in respect to the ";" at the end of the sentences. Unfortunately, I did not make the question correctly. Your code is somewhat equivalent to
Module[{}, {Hyperlink[
"GraphicsObjectLabel", {"notebook.nb", "celltag"}],
Hyperlink["GraphicsObjectLabel", "notebook.nb"]}]
This time without the offending ";".
But I do not need a column of hyperlinks. The actual problem has nothing to do with ",", it results from the pieces of (* some executable code *) within the module to proper positioning the hyperlinks. This would not be neccesary if the current implementaion of multiple edges graphs worked as expected
ref/Graph
In fact the labels named as "GraphicsObjectLabel" in the hyperlinks are edges of a graph (see the graph below), where the hyperlinks are connections to other notebooks with the explanation of the flows represented by the edges. The whole code for the graph is pretty tricky and cannot be posted, since the current implementation of Matematica does not truly support multiple edges among vertices the actual code is a workaround to circumvent the problem already mentioned in other posts about the current multiple edges graph bug.
The multiple edge graph shown below relays on a primitive (function) programmed by David Park, which overcomes the bug and allows for refinning interactively the layout of the edges in a graph, at will.
![enter image description here](http://community.wolfram.com//c/portal/getImageAttachment?filename=GermanStrategy19201945.PNG&userId=325599)
Anyway, I havent solved yet the
Hyperlink["GraphicsObjectLabel", {"notebook.nb", "celltag"}]
issue; while
Hyperlink["GraphicsObjectLabel", "notebook.nb"]
works OK.
Again, any help will be welcomed.
Martin.