Lets reword for clarity:

• Change: "Queries and their top hits: chord diagram" to "Chord diagram of queries and their top hits"
• "Circos looks great with less than 16 queries" -> to "Chord diagram looks great with fewer than 16 queries"
• "Graphical overview of hits" -> "Graphical overview of aligning hit sequences to the query"
• "Length distribution of matching sequences" -> "Length distribution of matching hit sequences"
• "Sequences producing significant alignments" -> "Hit sequences producing significant alignments"