1) I believe it's possible to use the same name on separate worksheets of the
same workbook but I can't work out how, the Insert ¦ Name command doesn't
seem to give me an option and all names I put in seem to be 'global'

2) I (accidentally) put the name of a cell being referred to in single
quotes and when the cell it was in dragged or copied the name referred to
changed. (ie. the single quotes are doing the opposite of dollar signs on a
normal A1 style cell reference.) However although I did this once
unintentionally I have been unable to repeat what I did

Thanks in advance

Simon