anchor.diff:  let gffExampleWrite = GFF3.write features BioItem.symbol (__SOURCE_DIRECTORY__ + "/data/gffExampleWrite.gff")
   
   (**
  -##Exampe: Sequence of CDS
  +##Example: Sequence of CDS
   
  -If a FastA file is included can look up the sequence of a CDS feature using the following function.
  +If a FastA file is included you can look up the sequence of a CDS feature using the following function.
   
   *)
   
  
positive.code: ###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.
  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).
  *)
  
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).
  *)
  
  