Well the ` is the equivalent to the German - with in combination with the control key is zooming. But I created a version, that replaces the ctrl+` with ctrl+shift+c for commenting:
[
//Commenting
{ "keys": ["ctrl+shift+c"], "command": "toggle_comment", "args": { "block": false } },
{ "keys": ["ctrl+alt+shift+c"], "command": "toggle_comment", "args": { "block": true } },
{ "keys": ["ctrl+ö"], "command": "show_panel", "args": {"panel": "console", "toggle": true} },
//Folding
{ "keys": ["ctrl+shift+ö"], "command": "fold" },
{ "keys": ["ctrl+shift+ö"], "command": "unfold" },
//Indenting
{ "keys": ["ctrl+ö"], "command": "indent" },
{ "keys": ["ctrl+ö"], "command": "unindent" }
]