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ActRelationshipCheckpoint
Lvl Type, Domain name and/or Mnemonic code Concept ID Mnemonic Print Name Definition/Description
1 L:  (B) 10351 B beginning Condition is tested every time before execution of the service (WHILE condition DO service.)
1 L:  (E) 10352 E end Condition is tested at the end of a repeated service execution. The service is repeated only if the condition is true (DO service WHILE condition.)
1 L:  (S) 10350 S entry Condition is tested once before the service is executed (IF condition THEN service).
1 L:  (T) 10353 T through Condition must be true throughout the execution and the service is interrupted (asynchronously) as soon as the condition turns false (asynchronous WHILE loop.) The service must be interruptible.
1 L:  (X) 10354 X exit Condition is a loop checkpoint, i.e. it is a step of an activity plan and, if negative causes the containing loop to exit.

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