all?
and?
any?
ascii?
attr?
attribute?
attributeLabel?
binary?
block?
char?
contains?
database?
date?
dictionary?
empty?
equal?
even?
every?
exists?
false?
floating?
function?
greater?
greaterOrEqual?
if?
in?
inline?
integer?
is?
key?
label?
leap?
less?
lessOrEqual?
literal?
logical?
lower?
nand?
negative?
nor?
not?
notEqual?
null?
numeric?
odd?
or?
path?
pathLabel?
positive?
prefix?
prime?
regex?
same?
set?
some?
sorted?
standalone?
string?
subset?
suffix?
superset?
symbol?
symbolLiteral?
true?
try?
type?
unless?
upper?
when?
whitespace?
word?
xnor?
xor?
zero?

----------------------------------------------------

[
	["predicate", "all?"],
    ["predicate", "and?"],
    ["predicate", "any?"],
    ["predicate", "ascii?"],
    ["predicate", "attr?"],
    ["predicate", "attribute?"],
    ["predicate", "attributeLabel?"],
    ["predicate", "binary?"],
    ["predicate", "block?"],
    ["predicate", "char?"],
    ["predicate", "contains?"],
    ["predicate", "database?"],
    ["predicate", "date?"],
    ["predicate", "dictionary?"],
    ["predicate", "empty?"],
    ["predicate", "equal?"],
    ["predicate", "even?"],
    ["predicate", "every?"],
    ["predicate", "exists?"],
    ["predicate", "false?"],
    ["predicate", "floating?"],
    ["predicate", "function?"],
    ["predicate", "greater?"],
    ["predicate", "greaterOrEqual?"],
    ["predicate", "if?"],
    ["predicate", "in?"],
    ["predicate", "inline?"],
    ["predicate", "integer?"],
    ["predicate", "is?"],
    ["predicate", "key?"],
    ["predicate", "label?"],
    ["predicate", "leap?"],
    ["predicate", "less?"],
    ["predicate", "lessOrEqual?"],
    ["predicate", "literal?"],
    ["predicate", "logical?"],
    ["predicate", "lower?"],
    ["predicate", "nand?"],
    ["predicate", "negative?"],
    ["predicate", "nor?"],
    ["predicate", "not?"],
    ["predicate", "notEqual?"],
    ["predicate", "null?"],
    ["predicate", "numeric?"],
    ["predicate", "odd?"],
    ["predicate", "or?"],
    ["predicate", "path?"],
    ["predicate", "pathLabel?"],
    ["predicate", "positive?"],
    ["predicate", "prefix?"],
    ["predicate", "prime?"],
    ["predicate", "regex?"],
    ["predicate", "same?"],
    ["predicate", "set?"],
    ["predicate", "some?"],
    ["predicate", "sorted?"],
    ["predicate", "standalone?"],
    ["predicate", "string?"],
    ["predicate", "subset?"],
    ["predicate", "suffix?"],
    ["predicate", "superset?"],
    ["predicate", "symbol?"],
    ["predicate", "symbolLiteral?"],
    ["predicate", "true?"],
    ["predicate", "try?"],
    ["predicate", "type?"],
    ["predicate", "unless?"],
    ["predicate", "upper?"],
    ["predicate", "when?"],
    ["predicate", "whitespace?"],
    ["predicate", "word?"],
    ["predicate", "xnor?"],
    ["predicate", "xor?"],
    ["predicate", "zero?"]
]

----------------------------------------------------

Checks for built-in predicates.