ss="keyword">typedef</span> <span class="identifier">bg</span><span class="special">::</span><span class="identifier">model</span><span class="special">::</span><span class="identifier">linestring</span><span class="special">&lt;</span><span class="identifier">point_type</span><span class="special">&gt;</span> <span class="identifier">linestring_type</span><span class="special">;</span>

    <span class="identifier">linestring_type</span> <span class="identifier">ls1</span><span class="special">,</span> <sp