Predicate

This section present the query predicates. (aka what you can put on the left hand side of queries).

Name

Predicate like: “ Node, A, F”, …

Or labeled Name : “a:A, n;Node”; or default labeled Name: “ a:.”

Edge

a +> Node

Attribute

Node.length == 5

Control flow

'(' predicate ')!'

Combining

Pred 1, (pred2), (pred3)