Changes the mapping between “§” and “`” keys when using US distribution with non-US keyboards. Download it to `/Library/LaunchDaemons/local.user-key-mapping.plist` and launch it with `launchctl load -w /Library/LaunchDaemons/local.user-key-mapping.plist`.

local.user-key-mapping.plist

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
  <key>Label</key>
  <string>local.user-key-mapping</string>
  <key>ProgramArguments</key>
  <array>
    <string>/usr/bin/hidutil</string>
    <string>property</string>
    <string>--set</string>
    <string><![CDATA[
      {
        "UserKeyMapping": [
          {
            "HIDKeyboardModifierMappingSrc": 0x700000064,
            "HIDKeyboardModifierMappingDst": 0x700000035
          },
          {
            "HIDKeyboardModifierMappingSrc": 0x700000035,
            "HIDKeyboardModifierMappingDst": 0x700000064
          }
        ]
      }
    ]]></string>
  </array>
  <key>RunAtLoad</key>
  <true/>
</dict>
</plist>