keyword">const</span> <span class="mdzsyn-identifier">Janet</span> <span class="mdzsyn-operator">*</span><span class="mdzsyn-identifier">argv</span><span class="mdzsyn-operator">,</span> <span class="mdzsyn-identifier">Janet</span> <span class="mdzsyn-operator">*</span><span class="mdzsyn-identifier">out</span><span class="mdzsyn-operator">,</span> <span class="mdzsyn-identifier">JanetFiber</span> <span class="mdzsyn-operator">*</span><span class="mdzsyn-operator">*</span><span class="mdzsyn-identifier">f</