</td><td>(lookup-environment-variable name) =&gt; (or string? false) name:string?</td><td>(environment-alist)</td></tr>

  <tr><td>SLIB</td><td>(getenv name) =&gt; (or string? false) name:string?</td><td>&nbsp;</td></tr>
  <tr><td>STk</td><td>(getenv name) =&gt; (or string? false) name:string?</td><td>&nbsp;</td></tr>
  <tr><td>STklos</td><td>(getenv name) =&gt; (or string? false) name:string?</td><td>(getenv)</td></tr>
  <tr><td>SCM</td><td>(getenv name) =&gt; (or string? false) name:string?</td><td>(geten