execution and test analysis.

Usage.md

+# Creating a new TDL project
+
+From the file menu select New and in the sub-menu select Project. In the New Project dialog box select either the 
+TDL or TDLtx option to create either a TDL model using the TDL graphical notation or textual notation respectively. 
+
+
 # TDL editor plugin
 
 To create a new TDL model by means of the TDLan2 textual representation, follow these steps:
@@ -42,3 +48,17 @@ After Eclipse restarts, you should be able to see a `W` button in the toolbar be
 The result will look like:
 
 [![Word.PNG](https://tdl.etsi.org/wiki/images/8/8b/Word.PNG)](https://tdl.etsi.org/wiki/index.php/File:Word.PNG)
+
+# Translate TDL to TTCN-3
+
+To tranlate a TDL model to TTCN-3 make sure to previously install the [TRex2/T3 Tools](https://t3tools.informatik.uni-goettingen.de/trac) and the components from the update site:
+
+https://t3tools.informatik.uni-goettingen.de/downloads/trex2/
+
+The translation from a TDL model to TTCN-3 code is done by selecting the TDL model and then press the **T3** icon in the TDL toolbar. The result of the translation is a 
+a TTCN-3 file with the same name as the TDL model file with the extension .ttcn3 placed in the same folder as the TDL model.
+
+# Test execution and result analysis
+
+[[Test execution]]
+