docs: semantic annotations' functionality

plugins/jdl-backend-application-default/README.md

@@ -6,13 +6,21 @@ This is the long description
 
 ## JDL Extensions/Customizations
 
-| **Annotation**                  | **@Persistence** | **Repository** | **Id** |
-|:--------------------------------|:-----------------|:---------------|:-------|
-| **entity**                      | yes              |                | yes    |
-| **@aggregate**                  | yes              | yes            | yes    |
-| **@embedded**                   | yes              |                |        |
-| **@vo**                         |                  |                |        |
-| **@searchCriteria(entityName)** |                  |                |        |
+This generator supports the following JDL extensions:
+
+- if any entity is annotated with @aggregate then the following table applies:
+
+| **Annotation**                  | **Entity** | **@Persistence** | **Repository** | **Id** |
+|:--------------------------------|------------|:-----------------|:---------------|:-------|
+| **entity**                      | yes        | yes              |                | yes    |
+| **@aggregate**                  | yes        | yes              | yes            | yes    |
+| **@embedded**                   | yes        | yes              |                |        |
+| **@vo**                         | yes        |                  |                |        |
+| **@searchCriteria(entityName)** | yes        |                  |                |        |
+| **@skip**                       | no         |                  |                |        |
+
+**@searchCriteria(entityName)** is used to specify the entity name for the search criteria, if empty will take the same fields as the actual entity.
+**@skip** entities used as search criteria should be marked with @skip
 
 ## Options