,
          this function can only be used for raw deflate, and must be used before
          the first <code class="computeroutput"><span class="identifier">write</span></code> call after
          an initialization. <code class="computeroutput"><span class="identifier">bits</span></code>
          must be less than or equal to 16, and that many of the least significant
          bits of <code class="computeroutput"><span class="identifier">value</span></code> will be inserted
          in the output.
    