Well it is a start, at improving Zemax's dreadful handling of files, but only a start. What I want changed is the total replacement in Zemax of the drop down lists of file names that appear whenever you have a file to select, whether it is for coatings or whatever. The drop down alphabetical list of just file names is something out of 80's software and has no place in a modern piece of software. The drop down list is useless on three counts, firstly you can't see any information about the file such as when it was created, secondly you can't change the list order of the files to put the most recently modified at the top and thirdly you can only access files in that appear in the directory you have setup as the default for that file type. The change I am asking for is very simple; whenever you have to select a file containing data that Zemax needs, Windows Explorer opens in the directory you selected as the default for that data type. Then you can change the list order depending on what you are looking for and if you find that the file is somewhere else you can navigate through the directory structure to find it. Surely this can't be rocket science to implement as it simply needs the drop down window subroutines replaced with calls to standard Windows procedures.