This Recommendation defines GFT, a graphical presentation format for TTCN-3 (Testing and Test Control Notation 3) Core Language defined in Recommendation Z.161. GFT is used for the graphical presentation of test behaviour in form of a subset of Message Sequence Charts as defined in Recommendation Z.120 with test specific extensions. GFT provides a number of graphical symbols to enable the graphical presentation of TTCN-3 test cases, functions, altsteps and control parts. GFT can be applied whenever it is necessary to define or document test behaviour graphically.

Revision marks indicate the conversion from ETSI texts.