diff --git a/src/org/graphstream/gama/extension/sender/AddEdgeAttributeStatement.java b/src/org/graphstream/gama/extension/sender/AddEdgeAttributeStatement.java
index 4ab8a290a162e55b4864a243d07c55f01d7fd0bc..69c4d8378fa739e6ff9aa0dac50b118f8a079b45 100644
--- a/src/org/graphstream/gama/extension/sender/AddEdgeAttributeStatement.java
+++ b/src/org/graphstream/gama/extension/sender/AddEdgeAttributeStatement.java
@@ -16,7 +16,15 @@ import msi.gaml.types.IType;
 import org.graphstream.gama.extension.GSManager;
 import org.graphstream.gama.extension.IKeywordGSAdditional;
 
-
+/**
+ * Implements the {@code gs_add_edge_attribute} command.
+ *
+ * <pre>
+ * gs_add_edge_attribute gs_sender_id:senderId gs_edge_id:edgeId gs_attribute_name:name gs_attribute_value:value;
+ * </pre>
+ * @author Thibaut Démare
+ *
+ */
 @symbol(name = IKeywordGSAdditional.ADD_EDGE_ATTRIBUTE, kind = ISymbolKind.SINGLE_STATEMENT, with_sequence = false)
 @inside(kinds = { ISymbolKind.BEHAVIOR, ISymbolKind.SEQUENCE_STATEMENT, ISymbolKind.LAYER })
 @facets(value = { @facet(name = IKeywordGSAdditional.SENDERID, type = IType.STRING, optional = false),
diff --git a/src/org/graphstream/gama/extension/sender/AddEdgeStatement.java b/src/org/graphstream/gama/extension/sender/AddEdgeStatement.java
index ec5c0998af545edc077b63956b49087dc9bc20a3..36617b9dcc89acf6502f0c4f9b8b78afe743233e 100644
--- a/src/org/graphstream/gama/extension/sender/AddEdgeStatement.java
+++ b/src/org/graphstream/gama/extension/sender/AddEdgeStatement.java
@@ -16,6 +16,15 @@ import msi.gaml.types.IType;
 import org.graphstream.gama.extension.GSManager;
 import org.graphstream.gama.extension.IKeywordGSAdditional;
 
+/**
+ * Implements the {@code gs_add_edge} command.
+ *
+ * <pre>
+ * gs_add_edge gs_sender_id:senderId gs_edge_id:edgeId gs_node_id_from:nodeId gs_node_id_to:nodeId gs_is_directed:dir;
+ * </pre>
+ * @author Thibaut Démare
+ *
+ */
 @symbol(name = IKeywordGSAdditional.ADD_EDGE, kind = ISymbolKind.SINGLE_STATEMENT, with_sequence = false)
 @inside(kinds = { ISymbolKind.BEHAVIOR, ISymbolKind.SEQUENCE_STATEMENT, ISymbolKind.LAYER })
 @facets(value = { @facet(name = IKeywordGSAdditional.SENDERID, type = IType.STRING, optional = false),
diff --git a/src/org/graphstream/gama/extension/sender/AddGraphAttributeStatement.java b/src/org/graphstream/gama/extension/sender/AddGraphAttributeStatement.java
index a7776e2b75a42dbd8ee50bd83612f19288915c94..f9607064ecac2dec667f0d3f4dda5339f6b5501c 100644
--- a/src/org/graphstream/gama/extension/sender/AddGraphAttributeStatement.java
+++ b/src/org/graphstream/gama/extension/sender/AddGraphAttributeStatement.java
@@ -16,7 +16,15 @@ import msi.gaml.types.IType;
 import org.graphstream.gama.extension.GSManager;
 import org.graphstream.gama.extension.IKeywordGSAdditional;
 
-
+/**
+ * Implements the {@code gs_add_graph_attribute} command.
+ *
+ * <pre>
+ * gs_add_graph_attribute gs_sender_id:senderId gs_attribute_name:name gs_attribute_value:value;
+ * </pre>
+ * @author Thibaut Démare
+ *
+ */
 @symbol(name = IKeywordGSAdditional.ADD_GRAPH_ATTRIBUTE, kind = ISymbolKind.SINGLE_STATEMENT, with_sequence = false)
 @inside(kinds = { ISymbolKind.BEHAVIOR, ISymbolKind.SEQUENCE_STATEMENT, ISymbolKind.LAYER })
 @facets(value = { @facet(name = IKeywordGSAdditional.SENDERID, type = IType.STRING, optional = false),
diff --git a/src/org/graphstream/gama/extension/sender/AddNodeAttributeStatement.java b/src/org/graphstream/gama/extension/sender/AddNodeAttributeStatement.java
index 34dbeba1d6e27cc3bf3d59fec4cdb56219b39c52..f53ec13c2dbcacc14fff59c65788fa2d2820f917 100644
--- a/src/org/graphstream/gama/extension/sender/AddNodeAttributeStatement.java
+++ b/src/org/graphstream/gama/extension/sender/AddNodeAttributeStatement.java
@@ -16,7 +16,15 @@ import msi.gaml.types.IType;
 import org.graphstream.gama.extension.GSManager;
 import org.graphstream.gama.extension.IKeywordGSAdditional;
 
-
+/**
+ * Implements the {@code gs_add_node_attribute} command.
+ *
+ * <pre>
+ * gs_add_node_attribute gs_sender_id:senderId gs_node_id:nodeId gs_attribute_name:name gs_attribute_value:value;
+ * </pre>
+ * @author Thibaut Démare
+ *
+ */
 @symbol(name = IKeywordGSAdditional.ADD_NODE_ATTRIBUTE, kind = ISymbolKind.SINGLE_STATEMENT, with_sequence = false)
 @inside(kinds = { ISymbolKind.BEHAVIOR, ISymbolKind.SEQUENCE_STATEMENT, ISymbolKind.LAYER })
 @facets(value = { @facet(name = IKeywordGSAdditional.SENDERID, type = IType.STRING, optional = false),
diff --git a/src/org/graphstream/gama/extension/sender/AddNodeStatement.java b/src/org/graphstream/gama/extension/sender/AddNodeStatement.java
index 3e95a1524e0ef76748c18357687fc8693cf242e1..f5e9fa9820bfe903627f3335b4b7217e7623b5f7 100644
--- a/src/org/graphstream/gama/extension/sender/AddNodeStatement.java
+++ b/src/org/graphstream/gama/extension/sender/AddNodeStatement.java
@@ -16,6 +16,15 @@ import msi.gaml.types.IType;
 import org.graphstream.gama.extension.GSManager;
 import org.graphstream.gama.extension.IKeywordGSAdditional;
 
+/**
+ * Implements the {@code gs_add_node} command.
+ *
+ * <pre>
+ * gs_add_node gs_sender_id:senderId gs_node_id:nodeId;
+ * </pre>
+ * @author Thibaut Démare
+ *
+ */
 @symbol(name = IKeywordGSAdditional.ADD_NODE, kind = ISymbolKind.SINGLE_STATEMENT, with_sequence = false)
 @inside(kinds = { ISymbolKind.BEHAVIOR, ISymbolKind.SEQUENCE_STATEMENT, ISymbolKind.LAYER })
 @facets(value = { @facet(name = IKeywordGSAdditional.SENDERID, type = IType.STRING, optional = false),
diff --git a/src/org/graphstream/gama/extension/sender/AddSenderStatement.java b/src/org/graphstream/gama/extension/sender/AddSenderStatement.java
index 0e80b5fd003c84cd363a4d7403694e74704874f0..59d9532dad9266dfd1535361e517a67e36c9a83a 100644
--- a/src/org/graphstream/gama/extension/sender/AddSenderStatement.java
+++ b/src/org/graphstream/gama/extension/sender/AddSenderStatement.java
@@ -16,6 +16,15 @@ import msi.gaml.types.IType;
 import org.graphstream.gama.extension.GSManager;
 import org.graphstream.gama.extension.IKeywordGSAdditional;
 
+/**
+ * Implements the {@code gs_add_sender} command.
+ *
+ * <pre>
+ * gs_add_sender gs_sender_id:senderId gs_nhost:host gs_port:port;
+ * </pre>
+ * @author Thibaut Démare
+ *
+ */
 @symbol(name = IKeywordGSAdditional.ADD_SENDER, kind = ISymbolKind.SINGLE_STATEMENT, with_sequence = false)
 @inside(kinds = { ISymbolKind.BEHAVIOR, ISymbolKind.SEQUENCE_STATEMENT, ISymbolKind.LAYER })
 @facets(value = { @facet(name = IKeywordGSAdditional.SENDERID, type = IType.STRING, optional = false),
diff --git a/src/org/graphstream/gama/extension/sender/ClearSendersStatement.java b/src/org/graphstream/gama/extension/sender/ClearSendersStatement.java
index 639e258dfd05a5b83241857b48eb143d89770d41..d1f9e9c7ac071770cca99d9cb8e07194327fec0e 100644
--- a/src/org/graphstream/gama/extension/sender/ClearSendersStatement.java
+++ b/src/org/graphstream/gama/extension/sender/ClearSendersStatement.java
@@ -12,6 +12,15 @@ import msi.gaml.statements.IStatement;
 import org.graphstream.gama.extension.GSManager;
 import org.graphstream.gama.extension.IKeywordGSAdditional;
 
+/**
+ * Implements the {@code gs_clear_senders} command.
+ *
+ * <pre>
+ * gs_clear_senders;
+ * </pre>
+ * @author Thibaut Démare
+ *
+ */
 @symbol(name = IKeywordGSAdditional.CLEAR_SENDERS, kind = ISymbolKind.SINGLE_STATEMENT, with_sequence = false)
 @inside(kinds = { ISymbolKind.BEHAVIOR, ISymbolKind.SEQUENCE_STATEMENT, ISymbolKind.LAYER })
 public class ClearSendersStatement extends AbstractStatement implements IStatement{
diff --git a/src/org/graphstream/gama/extension/sender/ClearStatement.java b/src/org/graphstream/gama/extension/sender/ClearStatement.java
index 1ca73a4eed469301cc1b738f813532d23deca30f..c26405e0fbc28d7b1b6c2282d6cd512bc969cd9b 100644
--- a/src/org/graphstream/gama/extension/sender/ClearStatement.java
+++ b/src/org/graphstream/gama/extension/sender/ClearStatement.java
@@ -16,8 +16,15 @@ import msi.gaml.statements.AbstractStatement;
 import msi.gaml.statements.IStatement;
 import msi.gaml.types.IType;
 
-
-
+/**
+ * Implements the {@code gs_clear} command.
+ *
+ * <pre>
+ * gs_clear gs_sender_id:senderId;
+ * </pre>
+ * @author Thibaut Démare
+ *
+ */
 @symbol(name = IKeywordGSAdditional.CLEAR, kind = ISymbolKind.SINGLE_STATEMENT, with_sequence = false)
 @inside(kinds = { ISymbolKind.BEHAVIOR, ISymbolKind.SEQUENCE_STATEMENT, ISymbolKind.LAYER })
 @facets(value = { @facet(name = IKeywordGSAdditional.SENDERID, type = IType.STRING, optional = false) })
diff --git a/src/org/graphstream/gama/extension/sender/CloseStatement.java b/src/org/graphstream/gama/extension/sender/CloseStatement.java
index 31f9ea8415d164dbd413ded76154ff801c8c285c..3a22bd4b2dc8995ace06b633cc1fe56c709c6a8c 100644
--- a/src/org/graphstream/gama/extension/sender/CloseStatement.java
+++ b/src/org/graphstream/gama/extension/sender/CloseStatement.java
@@ -16,7 +16,15 @@ import msi.gaml.types.IType;
 import org.graphstream.gama.extension.GSManager;
 import org.graphstream.gama.extension.IKeywordGSAdditional;
 
-
+/**
+ * Implements the {@code gs_close} command.
+ *
+ * <pre>
+ * gs_close gs_sender_id:senderId;
+ * </pre>
+ * @author Thibaut Démare
+ *
+ */
 @symbol(name = IKeywordGSAdditional.CLOSE, kind = ISymbolKind.SINGLE_STATEMENT, with_sequence = false)
 @inside(kinds = { ISymbolKind.BEHAVIOR, ISymbolKind.SEQUENCE_STATEMENT, ISymbolKind.LAYER })
 @facets(value = { @facet(name = IKeywordGSAdditional.SENDERID, type = IType.STRING, optional = false)})
diff --git a/src/org/graphstream/gama/extension/sender/RemoveEdgeAttributeStatement.java b/src/org/graphstream/gama/extension/sender/RemoveEdgeAttributeStatement.java
index 164a183588052db52ea0256c044a7d81cdc4a50e..b481bdffb5724a30a613c56b458e01d0184c0806 100644
--- a/src/org/graphstream/gama/extension/sender/RemoveEdgeAttributeStatement.java
+++ b/src/org/graphstream/gama/extension/sender/RemoveEdgeAttributeStatement.java
@@ -16,7 +16,15 @@ import msi.gaml.types.IType;
 import org.graphstream.gama.extension.GSManager;
 import org.graphstream.gama.extension.IKeywordGSAdditional;
 
-
+/**
+ * Implements the {@code gs_remove_edge_attribute} command.
+ *
+ * <pre>
+ * gs_remove_edge_attribute gs_sender_id:senderId gs_edge_id:nodeId;
+ * </pre>
+ * @author Thibaut Démare
+ *
+ */
 @symbol(name = IKeywordGSAdditional.REMOVE_EDGE_ATTRIBUTE, kind = ISymbolKind.SINGLE_STATEMENT, with_sequence = false)
 @inside(kinds = { ISymbolKind.BEHAVIOR, ISymbolKind.SEQUENCE_STATEMENT, ISymbolKind.LAYER })
 @facets(value = { @facet(name = IKeywordGSAdditional.SENDERID, type = IType.STRING, optional = false),
diff --git a/src/org/graphstream/gama/extension/sender/RemoveEdgeStatement.java b/src/org/graphstream/gama/extension/sender/RemoveEdgeStatement.java
index 5f24b22c31e1d176c6f7ed452e3a81757fbd7180..d79748ff865389389e0fe4bf3b0dc754105ba749 100644
--- a/src/org/graphstream/gama/extension/sender/RemoveEdgeStatement.java
+++ b/src/org/graphstream/gama/extension/sender/RemoveEdgeStatement.java
@@ -16,6 +16,15 @@ import msi.gaml.types.IType;
 import org.graphstream.gama.extension.GSManager;
 import org.graphstream.gama.extension.IKeywordGSAdditional;
 
+/**
+ * Implements the {@code gs_remove_edge} command.
+ *
+ * <pre>
+ * gs_remove_edge gs_sender_id:senderId gs_edge_id:edgeId;
+ * </pre>
+ * @author Thibaut Démare
+ *
+ */
 @symbol(name = IKeywordGSAdditional.REMOVE_EDGE, kind = ISymbolKind.SINGLE_STATEMENT, with_sequence = false)
 @inside(kinds = { ISymbolKind.BEHAVIOR, ISymbolKind.SEQUENCE_STATEMENT, ISymbolKind.LAYER })
 @facets(value = { @facet(name = IKeywordGSAdditional.SENDERID, type = IType.STRING, optional = false),
diff --git a/src/org/graphstream/gama/extension/sender/RemoveGraphAttributeStatement.java b/src/org/graphstream/gama/extension/sender/RemoveGraphAttributeStatement.java
index f4a244b92bfa334b18e77afd2774250beb7a4657..1440e5c1f3dff49575ba16143df0bb11680bfdf1 100644
--- a/src/org/graphstream/gama/extension/sender/RemoveGraphAttributeStatement.java
+++ b/src/org/graphstream/gama/extension/sender/RemoveGraphAttributeStatement.java
@@ -16,7 +16,15 @@ import msi.gaml.types.IType;
 import org.graphstream.gama.extension.GSManager;
 import org.graphstream.gama.extension.IKeywordGSAdditional;
 
-
+/**
+ * Implements the {@code gs_remove_graph_attribute} command.
+ *
+ * <pre>
+ * gs_remove_graph_attribute gs_sender_id:senderId gs_attribute_name:name;
+ * </pre>
+ * @author Thibaut Démare
+ *
+ */
 @symbol(name = IKeywordGSAdditional.REMOVE_GRAPH_ATTRIBUTE, kind = ISymbolKind.SINGLE_STATEMENT, with_sequence = false)
 @inside(kinds = { ISymbolKind.BEHAVIOR, ISymbolKind.SEQUENCE_STATEMENT, ISymbolKind.LAYER })
 @facets(value = { @facet(name = IKeywordGSAdditional.SENDERID, type = IType.STRING, optional = false),
diff --git a/src/org/graphstream/gama/extension/sender/RemoveNodeAttributeStatement.java b/src/org/graphstream/gama/extension/sender/RemoveNodeAttributeStatement.java
index ec10dbb876cf5240082d4ce86797dcccddabc563..7557ac4d368cbaa3b4dd30f540f6d655793c00c9 100644
--- a/src/org/graphstream/gama/extension/sender/RemoveNodeAttributeStatement.java
+++ b/src/org/graphstream/gama/extension/sender/RemoveNodeAttributeStatement.java
@@ -16,7 +16,15 @@ import msi.gaml.types.IType;
 import org.graphstream.gama.extension.GSManager;
 import org.graphstream.gama.extension.IKeywordGSAdditional;
 
-
+/**
+ * Implements the {@code gs_remove_node_attribute} command.
+ *
+ * <pre>
+ * gs_remove_node_attribute gs_sender_id:senderId gs_node_id:nodeId gs_attribute_name:name;
+ * </pre>
+ * @author Thibaut Démare
+ *
+ */
 @symbol(name = IKeywordGSAdditional.REMOVE_NODE_ATTRIBUTE, kind = ISymbolKind.SINGLE_STATEMENT, with_sequence = false)
 @inside(kinds = { ISymbolKind.BEHAVIOR, ISymbolKind.SEQUENCE_STATEMENT, ISymbolKind.LAYER })
 @facets(value = { @facet(name = IKeywordGSAdditional.SENDERID, type = IType.STRING, optional = false),
diff --git a/src/org/graphstream/gama/extension/sender/RemoveNodeStatement.java b/src/org/graphstream/gama/extension/sender/RemoveNodeStatement.java
index 7b16aee9f7629d04ae0c9a1959f7a580a07f6c70..a8012821aaf871a602e1d5b12323347890ca718e 100644
--- a/src/org/graphstream/gama/extension/sender/RemoveNodeStatement.java
+++ b/src/org/graphstream/gama/extension/sender/RemoveNodeStatement.java
@@ -16,6 +16,15 @@ import msi.gaml.types.IType;
 import org.graphstream.gama.extension.GSManager;
 import org.graphstream.gama.extension.IKeywordGSAdditional;
 
+/**
+ * Implements the {@code gs_remove_node} command.
+ *
+ * <pre>
+ * gs_remove_node gs_sender_id:senderId gs_node_id:nodeId;
+ * </pre>
+ * @author Thibaut Démare
+ *
+ */
 @symbol(name = IKeywordGSAdditional.REMOVE_NODE, kind = ISymbolKind.SINGLE_STATEMENT, with_sequence = false)
 @inside(kinds = { ISymbolKind.BEHAVIOR, ISymbolKind.SEQUENCE_STATEMENT, ISymbolKind.LAYER })
 @facets(value = { @facet(name = IKeywordGSAdditional.SENDERID, type = IType.STRING, optional = false),
diff --git a/src/org/graphstream/gama/extension/sender/StepStatement.java b/src/org/graphstream/gama/extension/sender/StepStatement.java
index 0df0eda4880033dbade6850d0989bcb8c1b8a731..1ad5cae705e02bf6bd79c1411df72645abd263b0 100644
--- a/src/org/graphstream/gama/extension/sender/StepStatement.java
+++ b/src/org/graphstream/gama/extension/sender/StepStatement.java
@@ -16,7 +16,15 @@ import msi.gaml.types.IType;
 import org.graphstream.gama.extension.GSManager;
 import org.graphstream.gama.extension.IKeywordGSAdditional;
 
-
+/**
+ * Implements the {@code gs_step} command.
+ *
+ * <pre>
+ * gs_step gs_sender_id:senderId gs_step_number:number;
+ * </pre>
+ * @author Thibaut Démare
+ *
+ */
 @symbol(name = IKeywordGSAdditional.STEP, kind = ISymbolKind.SINGLE_STATEMENT, with_sequence = false)
 @inside(kinds = { ISymbolKind.BEHAVIOR, ISymbolKind.SEQUENCE_STATEMENT, ISymbolKind.LAYER })
 @facets(value = { @facet(name = IKeywordGSAdditional.SENDERID, type = IType.STRING, optional = false),