Help on the Syntax
As you write a query, you can:
• check its syntax
• get help on the metamodel
Checking the Syntax
To check the syntax of your query without executing it:
Click Analyze 
.If the query syntax is not correct an error message pops up.
Getting Help on the Metamodel (Intellisense)
The Intellisense tool helps you write a query. Based on the query path already entered, the Intellisense tool provides you the list of metamodel elements you can access at that point:
• MetaClasses
• MetaAssociationEnds
• MetaAttributes
To get help on the metamodel while writing a query:
1. At the inserting point, press the [Ctrl]+[Space] keys.
2. In the list of elements, select the required element.
3. Press [Enter].
(Web Front-End) Click OK.