index_page()

uri_string()

redirect($uri = '', $method = 'auto', $code = NULL)

anchor_popup($uri = '', $title = '', $attributes = FALSE)

safe_mailto($email, $title = '', $attributes = '')

anchor($uri = '', $title = '', $attributes = '')

prep_url($str = '')

auto_link($str, $type = 'both', $popup = FALSE)

base_url($uri = '', $protocol = NULL)

url_title($str, $separator = '-', $lowercase = FALSE)