The Find function could be improved by including a forward and reverse button. Often I am searching, clicking the Find Next button and I will see an instance of the Find What term and before I know it I've clicked to the next instance. With no Find Previous function and when there are many instances of the Find term it is then cumbersome to get back to the missed version. Telling me how many instances of the Find term there are would also be useful, again as a navigation function. I am often using large pdf files with hundreds of pages.