WordPress at a glance
function is not described

install_themes_feature_list() WP 2.8.0

Deprecated in since 3.1.0. It is no longer supported and can be removed in future releases. Use get_theme_feature_list() instead.

Retrieve list of WordPress theme features (aka theme tags).

No Hooks.

Return

Array.

Usage

install_themes_feature_list();

Code of install themes feature list: wp-admin/includes/theme-install.php VER 5.1.1

<?php
function install_themes_feature_list() {
	_deprecated_function( __FUNCTION__, '3.1.0', 'get_theme_feature_list()' );

	if ( ! $cache = get_transient( 'wporg_theme_feature_list' ) ) {
		set_transient( 'wporg_theme_feature_list', array(), 3 * HOUR_IN_SECONDS );
	}

	if ( $cache ) {
		return $cache;
	}

	$feature_list = themes_api( 'feature_list', array() );
	if ( is_wp_error( $feature_list ) ) {
		return array();
	}

	set_transient( 'wporg_theme_feature_list', $feature_list, 3 * HOUR_IN_SECONDS );

	return $feature_list;
}