This protocol defines annotations on GA4GH genomic sequences It includes two types of annotations: continuous and discrete hierarchical.
The discrete hierarchical annotations (called Features) are derived from the Sequence Ontology (SO) and GFF3 work
The goal is to be able to store annotations using the GFF3 and SO conceptual model, although there is not necessarly a one-to-one mapping in Protobuf messages to GFF3 records.
The minimum requirement is to be able to accurately represent the current state of the art annotation data and the full SO model. Feature is the core generic record which corresponds to the a GFF3 record.
The continuous data (called Continuous) represents numerical data associated with each base position, such as is stored in BigWig, Wiggle or BedGraph Formats