 <?php
//* Do NOT include the opening php tag shown above. Copy the code shown below.
 
//* Customize the previous page link
add_filter ( 'genesis_prev_link_text' , 'sp_previous_page_link' );
function sp_previous_page_link ( $text ) {
    return '&#x000AB; Custom Previous Page Link';
}

	<?php
	//* Do NOT include the opening php tag shown above. Copy the code shown below.

	//* Customize the previous page link
	add_filter ( 'genesis_prev_link_text' , 'sp_previous_page_link' );
	function sp_previous_page_link ( $text ) {
	return '« Custom Previous Page Link';
	}