WP snippets (HTML, inside theme)

Active-nav.php

<a class="<?php if (is_page('PAGE ID')) echo 'current_page_item'; ?>">LINK HERE</a>

custom-post-loop.php

<?php query_posts(array( 
  'post_type' => 'deals',
  'posts_per_page' => 3
  ) ); 
?>

<?php while (have_posts()) : the_post(); ?>

<!-- Content here -->

<?php endwhile;?>

<?php wp_reset_query(); ?> // Always reset the loop

do-shortcode.php

<?php echo do_shortcode('SHORTCODE HERE'); ?>

template_directory.php

<?php bloginfo('template_directory'); ?> 

WP-snippets-theme.html

// This is where all of the snippets for Wordpress lives