(1 - F<span class="sub">A</span>) * B<span class="sub">RGB</span>) / S<span class="sub">A</span></p>
<p class="Body"><span class="EmptyRef">MergeReg</span> takes parameters and produces 
  the result operating on CPU registers.</p>
<p class="Body"><span class="EmptyRef">MergeMem</span> operates with the background 
  color referenced by a memory address.</p>
<p class="Body">Note, that after using the <span class="EmptyRef">Merge</span> 
  function, you have to call <a href="../../GR32_Blend/Routines/EMMS.ht