<?php $p = sanitize_key($_GET['page'] ?? ''); ?> <ul class="tnp-nav"> <li class="<?php echo $p === 'newsletter_extensions_index'?'active':''?>"><a href="?page=newsletter_extensions_index"><?php esc_html_e('Addons', 'newsletter')?></a></li> <li class="<?php echo $p === 'newsletter_extensions_support'?'active':''?>"><a href="?page=newsletter_extensions_support"><?php esc_html_e('Support', 'newsletter')?></a></li> </ul>
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