e>NIL</code>), all current <a href="ref.html#transient">transient</a>
symbols (if the argument is <code>T</code>), all <a
href="ref.html#external">external</a> symbols (if the argument is zero), or all
symbols of the given namespace <code>sym</code>. See also <code><a
href="refS.html#symbols">symbols</a></code> and <code><a
href="refA.html#all*">all*</a></code>.

<pre>
: (all)  # All internal symbols
-> (inc> leaf nil inc! accept ...

# Find all symbols starting with an underscore character
: (filter '((X) 