rdsign">-&gt;</span>&nbsp;<span class="constructor">UnixLabels</span>.terminal_io<br>
&nbsp;&nbsp;<span class="keyword">type</span>&nbsp;setattr_when&nbsp;=&nbsp;<span class="constructor">Unix</span>.setattr_when&nbsp;=&nbsp;<span class="constructor">TCSANOW</span>&nbsp;<span class="keywordsign">|</span>&nbsp;<span class="constructor">TCSADRAIN</span>&nbsp;<span class="keywordsign">|</span>&nbsp;<span class="constructor">TCSAFLUSH</span><br>
&nbsp;&nbsp;<span class="keyword">val</span>&nbsp;tcsetattr&nbsp;: