/usr/share/xul-ext/adblock-plus-element-hiding-helper/defaults/preferences/prefs.js is in xul-ext-adblock-plus-element-hiding-helper 1.2.2-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 | pref("extensions.elemhidehelper.selectelement_key", "Accel Shift K, Accel Shift S, Accel Shift F3");
pref("extensions.elemhidehelper.showhelp", true);
pref("extensions.elemhidehelper.acceptlocalfiles", false);
pref("extensions.elemhidehelper.composer_defaultDomain", 3);
|