Change the "Proceed to PayPal" button text in the WooCommerce checkout screen

gistfile1.txt

/*
 * Change the "Proceed to PayPal" button text in the WooCommerce checkout screen
 */
add_filter( 'gettext', 'rb_custom_paypal_button', 20, 3 );
function rb_custom_paypal_button( $translated_text, $text, $domain ) {
    switch ( $translated_text ) {
        case 'Proceed to PayPal' :
            $translated_text = __( 'Your new Paypal button text here', 'woocommerce' );
            break;
    }
    return $translated_text;
}