EIO Builtin Predicate Set

In the examples below, assume the database contains

?- dynamic(test/1).
?- public(test/2).

test(1).
test(1).	% Note that this is defined twice
test(2) :- atom(a).
test(3).

test(a, b).
test(a, c).

Also, assume that the standard input stream will yield the following when read (where <space> stands for a single space).

<space>a(b, C).
/* This is a comment */ abc.

Also, assume that there exists a text input stream with alias textin and a text output stream with alias textout. Assume that the the first line of textin contains

<space>x(y, Z).