def snip(content):
    """
    This is a special modifier, that will look for a marker in
    ``content`` and if found, it will truncate the content at that
    point.

    This way the editor can decide where he wants content to be truncated,
    for use in the various list views.

    The marker we will look for in the content is {{{snip}}}
    """
    return content[:content.find('{{{snip}}}')] + "..."