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====== Identifier on implicit QV ======

It is possible to associate a query variable declared implicitly with an identifier. This, enables the manual usage of that query variable, like any other ''final'' variable in the scope. The most common approach is: '' n:Node'', where ''n'' is the query variable.

===== Node =====

When a Node variable is assigned to an identifier. 

<code java>
n1:Node  n2:Node n 
<code>

It is also possible to assign a identifier from the ''default'' Node type of the current graph, with the ''.'' (dot):  (n represent any Node)

<code java>
 n:. 
</code>

===== Argument =====

When the argument of a Node is assigned to an identifier:

<code java>
 Sphere(r)
</code>

''r'' is the query variable assigned to the first argument in the [[:01_user_documentation:07_rgg_xl:02_xl:03_query:01_predicate:01_node|node pattern]] of the sphere. 
It is also possible to "skip" some of the arguments by either: a dot, or by omitting them:

<code java>
 N(,.,.,a,b,,)
</code>

In the example above ''a'' and ''b'' are assigned to the 4th and 5th arguments of the node pattern of ''N''.