A Quikie by Oliver

also see Forum

    <header>
        <nav>{NAV_LIST_UL:BP}</nav>
[HEADER]
        <section class="header-content">{HEADER}</section>
[/HEADER]
    </header>
    <div class"main[LEFT] has-marginal-left[/LEFT][RIGHT] has-marginal-right[/RIGHT]">
[LEFT]
        <section class="col-left">{LEFT}</section>
[/LEFT]
        <article>
            {CONTENT}
        </article>
[RIGHT]
        <section class="col-left">{RIGHT}</section>
[/RIGHT]
    </div>
    <footer>
        <p>&copy; 2015 Whatever</p>
[FOOTER]
        <section class="footer-content">{FOOTER}</section>
[/FOOTER]
    </footer>

And do not forget to check conditional replacers