Underscores really leave spaces as the main delimeter; i.e. when you see e.g. winsock_ctx, your brain is really keying on the space rather than the line. Compa

Underscores really leave spaces as the main delimeter; i.e. when you see e.g. winsock_ctx, your brain is really keying on the space rather than the line. Compare that to winsock-ctx, where I notice the line more. We're good at reading spaces, both because we've been trained to, and because they'll always stand out more than using one squiggle among a bunch of other squiggles. Just my guess.