EmSixTeen

// This gist is now maintained on github at https://github.com/luetkemj/wp-query-ref

<?php
/**
* WordPress Query Comprehensive Reference
* Compiled by luetkemj - luetkemj.github.io
*
* CODEX: http://codex.wordpress.org/Class_Reference/WP_Query#Parameters
* Source: https://core.trac.wordpress.org/browser/tags/4.9.4/src/wp-includes/query.php
*/

EmSixTeen

<?php
// add the below to your functions file
// then visit the page that you want to see 
// the enqueued scripts and stylesheets for

function se_inspect_styles() {
    global $wp_styles;
    echo "<h2>Enqueued CSS Stylesheets</h2><ul>";
    foreach( $wp_styles->queue as $handle ) :
        echo "<li>" . $handle . "</li>";

EmSixTeen

CULTURE   SPEC.CULTURE  ENGLISH NAME
--------------------------------------------------------------
                        Invariant Language (Invariant Country)
af          af-ZA       Afrikaans
af-ZA       af-ZA       Afrikaans (South Africa)
ar          ar-SA       Arabic
ar-AE       ar-AE       Arabic (U.A.E.)
ar-BH       ar-BH       Arabic (Bahrain)
ar-DZ       ar-DZ       Arabic (Algeria)
ar-EG       ar-EG       Arabic (Egypt)