Do you mean https://dl.acm.org/doi/abs/10.1145/390009.804450 (https://dl.acm.org/doi/abs/10.1145/390009.804450)
Gosh - The last time I worked with APL was on an Apple ][ clone. They had implemented the APL symbols in their "machine code" - copying the Apple ROM was forbidden.
In Borland Pascal programs two consecutive pluses were often used when writing string expressions in several lines
Does that really exist in any Pascal dialect? I never knew about it, where can I read the documentation about the double pluses syntax?
Does that really exist in any Pascal dialect?
Virtual Pascal and TMT Pascal compile this as well.
I think this is a matter of ease of understanding the code; that a programming language is not only a cold theory about syntax, but also the presence of a certain human interface. After all, the language is made to facilitate interaction with the machine, not for the intrinsic value of following some formal logic.
So we can write without a semicolon
Repeat Delay(1) Until KeyPressed;
...So the semicolon is defined in such a way that we can write....