anchor.diff:                          if state.bestFwdDelta < 0.0<C> && state.ft < fwdTailLenMin && state.fb>dp.pp.minLength
                               then yield CHOP_F_AMP
                           elif state.fb < fwd.body.Length then yield EXT_F_AMP
  -                        if state.bestAnnealDelta < 0.0<C> && state.ft > fwdTailLenMin
  -                            then yield CHOP_F_ANNEAL
  +                        if state.bestAnnealDelta < 0.0<C> && state.ft > fwdTailLenMin then 
  +                            yield CHOP_F_ANNEAL
                           elif state.ft < fwdTailLenMax then yield EXT_F_ANNEAL
   
                           match sign state.bestAnnealDelta, sign state.bestFwdDelta with
  
positive.code:     let X = rev.body.Length+middleDNA.Length-1
      /// First base of inline region
      let Y = rev.body.Length
  
      /// Recursive optimization of the primer ends, adjusting lengths to get the amp / anneal and primer lengths optimized
      let rec tuneTailsOpt itersRemaining (state:TuneState) (seen':Set<TuneVector>) =
  
  
negative.code:     // Validate primer annotation and primers are legit
      primerValidation.checkPrimers primers
      primerValidation.checkPrimersVAssembly (List.zip primers newTree)
      primers, newTree
  