You have posted in a forum for Adobe RoboHelp but your problem does not seem to be related to that product.
Adobe is a company with many products. I suspect you are using Adobe Reader but it could be Adobe Acrobat or some other product. Please advise which product and the post will be moved to the correct forum.
Links to any post moved to another Adobe forum will still work.
Please use the blue Reply button at the top to help me help you. The black Reply link nests replies and they sort out of order.