 the following interactive session):
<P>
<PRE><I>%</I> <B>concat</B> a b {c d e} {f {g h}}
<I>a b c d e f {g h}</I></PRE>
<P>
it will also concatenate things that are not lists, as can be seen from this
session:
<P>
<PRE><I>%</I> <B>concat</B> &quot; a b {c   &quot; d &quot;  e} f&quot;
<I>a b {c d e} f</I></PRE>
<P>
Note also that the concatenation does not remove spaces from the middle of
values, as can be seen here:
<P>
<PRE><I>%</I> <B>concat</B> &quot;a   b   c&quot; { d e f }
<I>a   b   c d e f</I></P