I am sorry to bore you again with this problem, but I can not fix it. I went through the documentation, the help on-line the examples-files, but I did not find anything. I am going to finish and I hope this is my last problem. I have a document with five tables, each section is un-numbered (i.e. *), Only one footnote without any label, a references section with works cited in the document by labels of the form: AuthorName (Year) and about forty labeled equations. I am deciding if it is worth to use the decimal alignment for each table. It seems to work fine except for the empty cell of the tables (when I fill them with --- it has a different alignment). In the body text, I need to refer only to some cells inside two different table, only with two different symbol, but I can succeed in doing it. I tried to use simply (*) and (**) for labeling the two categories of cells, but this method have some problems with decimal alignment. Is There someone so kind as to give me some suggestion or tell me that my purpose is not feasible ? A very very less important question is about float tables placement: I try the suggestions on the documentation and help on-line but without success: in particular placing [h] or \[h] in Tex mode at the very first line of the float. Any hint ? whatever is your reply, thank you very much for your previous kind and helpful assistance. Best regards Carlo