UML-2.5.1 refers to 'isTestFirst' in 16.11.3.4 but to isTestedFirst in the attributes list for LoopNode under 16.14.30.4 Attributes
Execution of the test section may precede or follow execution of the bodyPart, depending on whether isTestFirst is true or false, respectively. ... If the bodyPart is executed first (isTestFirst=false), it is always executed at least once ... Source Unified Modeling Language 2.5.1
LoopNode: running loopVariable example Gallery Tutorial TRAIL: Webel's ultimate guide to Systems Modeling Language (v1) with MagicDraw/Cameo Section 01:04: UML Behavior: Activities quick start Slide kind UML Activity Diagram
LoopNode with loopVariable - ADVANCED REFERENCE This content has been marked as discussing an ADVANCED topic! Gallery Tutorial TRAIL: Webel's ultimate guide to Systems Modeling Language (v1) with MagicDraw/Cameo Section 01:04: UML Behavior: Activities quick start
LoopNode: basic running example Gallery Tutorial TRAIL: Webel's ultimate guide to Systems Modeling Language (v1) with MagicDraw/Cameo Section 01:04: UML Behavior: Activities quick start Slide kind UML Activity Diagram