This is important enough that I think https://www.paulgraham.com/bel.html (1) should be the main link we're discussing. For one, https://sep.turbifycdn.com/ty/cdn/paulgraham/bellanguage.txt (2) refers extensively to the Bel sources which are at https://sep.turbifycdn.com/ty/cdn/paulgraham/bel.bel?t=16882... (3). But you won't get 3 from 2.

I think the original URL was https://sep.yimg.com/ty/cdn/paulgraham/bellanguage.txt [0]

However, Yahoo Stores (which is the, er… CMS that 'pg uses) was aquired in 2022[1], and it seems that the new owner migrated some assets to a new domain.

[0] See https://web.archive.org/web/20191012073002/https://www.paulg...

[1] https://help.turbify.com/s/article/faq-merchant-solutions-up...