download($rempath, $locpath[, $mode = 'auto'])

set_item($item, $value)

set_delimiters([$l = '{'[, $r = '}']])

class CI_Session userdata([$key = NULL])

word_limiter($str[, $limit = 100[, $end_char = '…']])

timeout($seconds = 5)

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

config_item($key)

array_replace_recursive(array $array1[, ...])

or_group_start()