sp;<span class="keyword">val</span>&nbsp;current_dir_name&nbsp;:&nbsp;string<br>
&nbsp;&nbsp;<span class="keyword">val</span>&nbsp;parent_dir_name&nbsp;:&nbsp;string<br>
&nbsp;&nbsp;<span class="keyword">val</span>&nbsp;dir_sep&nbsp;:&nbsp;string<br>
&nbsp;&nbsp;<span class="keyword">val</span>&nbsp;concat&nbsp;:&nbsp;string&nbsp;<span class="keywordsign">-&gt;</span>&nbsp;string&nbsp;<span class="keywordsign">-&gt;</span>&nbsp;string<br>
&nbsp;&nbsp;<span class="keyword">val</span>&nbsp;is_relative&nbsp;:&