Making custom changes to CP language I want to change a few words in the CP (Craft 3). What's the best way to do it, without being overwritten by a Craft update if possible...?
I was thinking about creating my own language file, but can't find the complete method to do so, and it might still be affected by an update? Any ideas?
Just create translations/en/app.php directory of your Craft installation with the following content (replace en with the desired language code):
&lt;?php return [
    'Settings' =&gt; ' Params',
];

Craft updates won't touch it.