Ok I look into it, but it looks like another issue with the keyboard layout.
The use of different keymaps (layouts) should be easy, once I've completed it. After editing the keymap, which will be possible in the GUI or by simply using a text editor, you only have to rename the file to "DefaultKeyMap" and both the commandline and the gui version will load it automatically. The keymaps can be shared with all people using the same keyboard layout, so I will not try to create keymaps for other keyboard layout by myself. But i happily will include keymaps send to me
I am surprised that you find the cli version easier to use. It definitely is much easier to implement (apart from finding a letter for the options).
In general I will try to keep cli and gui in sync. As I implement features independent of the user interface, the main problem for the cli is finding a free and appropriate letter for the option.
I will set the default duration to 0.03s in the next version as you suggested, but also make it changeable.