Tags inside a sep{~n}
================={~n}
{#people}
    {name}{@sep petname="fluffy"},{pet}{petname}{/sep}
{/people}{~n}

sep inside a scalar{~n}
==================={~n}
{#scalar}
    {name}{@sep petname="fluffy"},{pet}{petname}{/sep}
{/scalar}{~n}

Nested sep inside another non-array section{~n}
==========================================={~n}
{#people}
    {#toys}
        {name}'s pet {pet} plays with a {.}{@sep}, {/sep}
    {/toys}
{/people}{~n}

Else block inside a sep{~n}
======================={~n}
{#people}
    {name}{@sep},{pet}{petname}{:else}elseblock{/sep}
{/people}{~n}

Sep outside any section{~n}
======================={~n}
{@sep}sep is printed outside any section{/sep}