Insert extra content directly after the entry content

functions.php

<?php
// Paste the code BELOW this line into your child theme functions.

/**
 * Insert extra content directly after the entry content
 *
 * @author Reasons to Use Genesis
 * @link http://reasonstousegenesis.com/genesis-entry-content/
 */
add_action( 'genesis_entry_content', 'rtug_after_entry_content' );
function rtug_after_entry_content() {

	echo '<p><strong>An extra line of text after the entry content</strong></p>';

}

xhtml-functions.php

<?php
// Paste the code BELOW this line into your child theme functions.

/**
 * Insert extra content directly after the entry content (XHTML)
 *
 * @author Reasons to Use Genesis
 * @link http://reasonstousegenesis.com/genesis-entry-content/
 */
add_action( 'genesis_post_content', 'rtug_after_entry_content' );
function rtug_after_entry_content() {

	echo '<p><strong>An extra line of text after the entry content</strong></p>';

}