anchor.diff:  ###How to use GFF3SanityCheck
   
   
  -The GFF3SanityCheck prints wheter your GFF3 file is valid or not. It returns all specified errors including the lines in which they occured.
  +The GFF3SanityCheck prints wether your GFF3 file is valid or not. It returns all specified errors including the lines in which they occured.
   In contrast to GFF2 the field 3 (type, feature or method) of a GFF3 entry is restricted to terms defined by the sequence ontology (SO) so this validator is able to check if the entry is a valid SO term.
   You can find new versions of the SO at (https://sourceforge.net/projects/song/files/SO_Feature_Annotation).
   *)
  
positive.code: let gffExampleWrite = GFF3.write features BioItem.symbol (__SOURCE_DIRECTORY__ + "/data/gffExampleWrite.gff")
  
  (**
  ##Exampe: Sequence of CDS
  
  If a FastA file is included can look up the sequence of a CDS feature using the following function.
  
  *)
  
  
negative.code: ##Reading GFF3 files
  
  
  To read in a gff you have to insert a filepath and optionally a FastA converter. For further information about FastA check the [FastA section](https://csbiology.github.io/BioFSharp/FastA.html)
  or visit [API Reference - FastA](https://csbiology.github.io/BioFSharp/reference/biofsharp-io-fasta.html).
  *)
  
  