This tool is for use in opening the Harpoon Commanders Edition/ Harpoon Classic scenario editor with "command line" options  relating to the use of Database other than the 'installed' database and storing a quick to retrieve list of custom scenarios.
The program should be extracted from the compressed folder into the main harpoon folder, ie the one containing the scenario editor (Wscenedt.exe) etc. When first executed an associated '.ini' file will be produced otherwise no other changes are made to the computer so to uninstall simply delete the SELaunch.exe & SELaunch.ini files.

In use the program provides a simple window with a number of text boxes. These can be populated using the buttons down the right side of the window with respective editor name/file path; list of custom database name/file paths; and list of custom scenario name/file paths. The built in list of battlesets is also present at the bottom of the window.
You must at least set the editor file name (and path) using the apropriate button to the right of the editor box, and to be of use you should enter the individual custom database file path/names that you might wish to use for editing/writing scenarios. You can also enter custom scenario file path/names thatyou might want to edit or are currently developing so that you can in future quickly open the editor ready to start work.

To start the editor with custom database &/or scenario files you select them with a mouse click. You should also select the appropriate battleset file. If you change your mind you can select an alternative or you can use the CLR button to clear any selection. 
If there is an invalid entry you will get a warning if you select it and will need to delete it (with the DEL button) then if appropriate reset it with the correct file path/name.
In the case of custom battlesets, the program doesn'tcheck that you have correctly installed the file, if you haven't then the scenario editor won't start correctly.
To start the editor press the lower right button and to save the settings (if changed since opening SELaunch) then press the close/save button at the top left.
Any problems please go to the Harpgamer forum and send a PM to the author (me,Don Thomas)
I hope this makes it easier to write custom scenarios and encourages you to share them with the Harpoon community.