I looked for ages for info on putting a little icon on to the caption bar. It eventually dawned on me that it was the same as the icon that goes in the status bar when the window is minimised (%mi), but this took a long time to get into my thick skull as the window in question didn't allow minimising! The help file entry for %mi doesn't state this obvious correlation, and a seach using 'caption bar' and 'icon' didn't bring it up.
The other thing I looked in vain for in the FTN95 help file is what to do when the user clicks on a data file of the right type. I had set the file association manually. Of course the answer is simple and trivial - Windows calls the FTN95 program with the associated (and clicked) data file name given as the first argument/parameter on an 'invisible' command line. I suppose that it is obvious really, but nevertheless I couldn't find it in the online documentation, and hit on it only after following a hunch and a vague recollection of setting up some sort of interface file in a much earlier version of Windows than XP (1.0 or 1.1!) which mentioned the command line.
I'm still looking for automatic ways of setting file associations and posting shortcuts to the start menu and/or desktop, but I suspect that that is why one pays all that money for an installer!
Eddie