CodeStyling Localization Plugin

Thanks BD.I had looked at some of these links, and in fact I’ve found a more recent discussion of getting Hueman to work in french:

The plugin I was using doesn’t help. I think I simply need to change the theme code.

If I’ve understood things right, I must “declare the text domain” in wp-includes/l10n.php

In this file the bit of code for loading the theme’s translated strings reads:

function load_theme_textdomain( $domain, $path = false ) {
$locale = get_locale();

I’ve looked at the codex too, and it says:
$domain
(string) (required) Unique identifier for retrieving translated strings.
Default: None
$path
(unknown) (optional) The directory where the .mo file can be found (without the trailing slash).
Default: false

I’m not a programmer, and am not clear what I should be declaring. Can you suggest what’s needed? (I do have the .po and .mo files properly installed). Thanks.