TLDR: the program prints a pseudorandom sequence of characters 205 and 206, which on Commodore 64 are graphics characters similar to / and \.
When repeated across multiple lines, it looks like an intricate random maze. But it is actually just a visual representation of whatever PRNG is used on the platform, with the default seed as set by the BASIC interpreter.
When repeated across multiple lines, it looks like an intricate random maze. But it is actually just a visual representation of whatever PRNG is used on the platform, with the default seed as set by the BASIC interpreter.
https://sta.c64.org/cbm64pet.html