Changes

=== FAQ ===

=== FAQ ===

====1. vt cannot retrieve sequences from my reference sequence file====

====Reference Sequence====

 

  vt cannot retrieve sequences from my reference sequence file

 

   It is common to use  reference files based on the UCSC browser's database and from the Genome Reference Consortium.

   It is common to use  reference files based on the UCSC browser's database and from the Genome Reference Consortium.

   For example, HG19 vs GrCH37.  The key difference is that chromosome 1 is represented as chr1 and 1 respectively in the  

   For example, HG19 vs GrCH37.  The key difference is that chromosome 1 is represented as chr1 and 1 respectively in the