Notes:
The first example shows the spontaneous introduction of something like an enumerated type or maybe a character constant. There was no such thing in Algol, but Joern basically said, I do not care, I just want to express the intention that the assembly constant d14 in fact is an implementation of a carriage return. Joern did not have to explain this new language feature - we are in the domain of compilers so a domain concept should be self explanatory.
It was too bad that in the 1960s good people had to wait 10 years before language technology caught up with their normal needs, such as enumerated types or character constants. But I believe this situation has not changed insofar as we have today too many needs that will not be fulfilled for the next 10 years unless there can be a paradigm shift.