HSP identity cutoff:
all the HSPs with identities below this cutoff
are going to be filtered out.
Context Logic :
when 'Yes', the multiple hits (if there are) are
arranged based on their relations in the coverage of the query sequence.
For example,
if the first (longest) hit covers 100% of the
query sequence, while the second one
only covers 30% of the query, then only the first hit is output
and the rest hits will be discarded. This context logic is
useful when you search a cDNA or mRNA sequence against a genome map to
find its corresponding gene position, because the correct gene should
cover roughly the whole cDNA sequence while homologous genes usually cover
just partial regions of the cDNA sequence. However,
if the second hit has almost the same coverage as the first (longest) hit,
i.e., within 5%, we still keep it.