diff --git a/2.-Software-Architecture-Specification.md b/2.-Software-Architecture-Specification.md
index 9fdae80..5c6ab11 100644
--- a/2.-Software-Architecture-Specification.md
+++ b/2.-Software-Architecture-Specification.md
@@ -55,11 +55,11 @@ The aim of this project is to program a standalone application for Windows based
 
 **GUI** Graphical User Interface
 
-**.NET** The .NET Framework is a software development and runtime environment developed by Microsoft for Microsoft Windows.
+**.NET** The .NET Framework is a software development and runtime environment developed by Microsoft for Microsoft Windows
 
-**IODD** 
+**IODD** Means IO Device Description and describes sensors and actuators
 
-**GSD**
+**GSD** General Station Description, data format for Profibus and Profinet devices
 
 # 2. System Overview <a name="S"/>