Error message
In the message, %s marks a value that the engine fills in when it raises the error.
The story
A program was started with a lot of command line words, and the engine could not hold them all. Let me explain. When you call interface, the engine takes every raw word from the command line, copies each one into the journey's own memory, and classifies them all. The memory comes from one arena, and the arena has one declared capacity, set in hrs.feml. There used to be a fixed limit of sixty four words. That invented number is gone. Now the only limit is the real capacity. When the arena cannot lend enough room for all the words, the engine does not classify only some of them, and it does not cut the list short. A quietly truncated command line would mean the program runs with arguments missing, and nobody would know. Instead, it refuses out loud, telling you how many words arrived and what the capacity was. To fix this, either pass fewer arguments, or raise the arena capacity. The rule is simple: all of the words, or none of them.
Text from the Rush engine's error catalogue.