For predicates, I’ve abandoned the p postfix as it’s then so hard to know which predicates you have. Instead we now use the ? as a prefix to any Boolean predic

For predicates, I’ve abandoned the p postfix as it’s then so hard to know which predicates you have. Instead we now use the ? as a prefix to any Boolean predicate, so in the repl you can just type ? Hit tab and see all available predicates.