Extremely well-commented source code
Halcyon is written mostly in Ruby.
Across all Ruby projects on Ohloh, 19% of all source code lines are comments. For Halcyon, this figure is 44%.
This very impressive number of comments puts Halcyon among the best 10% of all Ruby projects on Ohloh.
A high number of comments might indicate that the code is well-documented and organized, and could be a sign of a helpful and disciplined development team.