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<?php //<~ dont add me in
add_action( 'genesis_entry_footer', 'wpb_prev_next_post_nav_cpt' );
function wpb_prev_next_post_nav_cpt() {
 if ( ! is_singular( array( 'portfolio', 'post' ) ) ) //add your CPT name to the array
 return;
 genesis_markup( array(
 'html5' => '<div %s>',
 'xhtml' => '<div class="navigation">',
 'context' => 'adjacent-entry-pagination',
 ) );
 echo '<div class="pagination-previous alignleft">';
 previous_post_link('&laquo; %link', 'Previous Post'); // Change nav text here
 echo '</div>';
 echo '<div class="pagination-next alignright">';
 next_post_link(' %link &raquo;', 'Next Post'); // Change nav text here
 echo '</div>';
 echo '</div>';
}