This is a good project story. Note that as in many high-throughput applications, non-gui solutions dominate, such as the 3270-like systems. A securities firm

This is a good project story. Note that as in many high-throughput applications, non-gui solutions dominate, such as the 3270-like systems. A securities firm in Chicago called "Security APL" used APL as their internal language. It appears that the code was made into a product and is in use today: https://www.waterstechnology.com/management-strategy/1607440/security-apl-acquired-by-ambitious-checkfree https://www.waterstechnology.com/management-strategy/1607440...