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Default.lua --> dutch
That's irrelevant, the camera probably needs a new propset just like the sx410, we talked about it here:
https://chdk.setepontos.com/index.php?topic=13133.0 
spooky zoom_keys: tboxtest.lua z_in is z_in+z_out, moving cursor left and right (releasing z_in=z_out).
z_out moves lens, not cursor.
The ZOOM keys are not in the keymap,I guessed the mask for fast speed, the most left and right position of the lever.That's on the TO DO list.
First we need to resolve the modemap. We are currently using a modemap copied from ixus265.
If you forgot how to do it, go to:
Miscellaneous Stuff -> Debug Parameters
set "Debug data display" to [Props] and "Propcase / Param data page" to [4]
Exit CHDK menu, you'll get a list on screen (40...49).
The numeric value of current shooting mode is displayed after ID 49:
Please note the number displayed there as you go through all shooting modes.
You can change shooting modes in the SET menu in rec mode on your camera.
Attached is the currently used modemap that needs to be corrected.
