> As you suspect, it would fill 1000MB of memory. Did I understand correctly? I'm worried because we have files with 40,000 revisions and tipical file size might be 50 - 100kb. So in this case would annotate take up 40,000 * 50 Kb (i.e 2 - 4 Gb) of memory? If so I would rather annotate take a second longer ;-) Nick