ar> + <var>n</var> &lt;= <code>(blob-length <var>source</var>)</code></p><p>0 &lt;= <var>target-start</var> &lt;= <var>target-start</var> + <var>n</var> &lt;= <code>(blob-length <var>target</var>)</code></p><p>This copies the octets from <var>source</var> at indices [<var>source-start</var>, <var>source-start</var> + <var>n</var>) to consecutive indices in <var>target</var> starting at <var>target-index</var>.</p><p>This must work even if the memory regions for the source and the target overlap, i.e., the o