Error codes · Syntax
PW0016
read_whole
The program must hold to this: a clause's value, a string's hole and a block marker's expression are read whole, and nothing follows what their grammar reads.
The decisions behind it
Reading the diagnostic
pw check prints the code in brackets, [PW0016], with the sentence above and the place in your program. Errors and diagnostics explains how to read one, and every code is listed with its rule.