<li> You also have the option to provide <span class='bold'> your own
code </span>, with the following conventions: <ul>
<li> You also have the option to provide <span class='bold'> your own
code </span>, with the following conventions: <ul>
first argument <span class='bold'> start </span>, <span class='bold'>
stop </span> or <span class='bold'> restart </span>. It is important
to honor this argument, as your slice may be stopped and restarted at
first argument <span class='bold'> start </span>, <span class='bold'>
stop </span> or <span class='bold'> restart </span>. It is important
to honor this argument, as your slice may be stopped and restarted at