e procedures with <code>u16</code> in their names deal with the unsigned representation, those with <code>s16</code> with the two's complement representation.</p><p>The procedures with <code>native</code> in their names employ the native endianness, and only work at aligned indices: <var>k</var> must be a multiple of 2.  It is an error to use them at non-aligned indices.</p></dd><dt><code>(blob-u32-ref </code><var>endianness</var> <var>blob</var> <var>k</var><code>)</code></dt><dt><code>(blob-s32-ref </code