Use when instead of while

docs/4_4_1_can.adoc

@@ -359,7 +359,7 @@ For specification the boolean values `PRIMARY_ERROR_FLAG` and `SECONDARY_ERROR_F
 For specification the boolean values `TRUE` and `FALSE` (see <<table-boolean-value-kinds>>) shall be used.
 
 h|Behavior
-3+|While transmitting CAN frames, various kinds of bus error may happen.
+3+|When transmitting CAN frames, various kinds of bus error may happen.
 A Bus Simulation can simulate such errors by providing <<low-cut-can-bus-error-operation, `Bus Error`>> operations to the Network FMUs.
 Based on consumed <<low-cut-can-bus-error-operation, `Bus Error`>> operations, Network FMUs shall maintain an internal CAN node state (see <<low-cut-can-error-handling>>).
 To determine the CAN node state properly, Network FMUs need the information about their role at the time when the simulated error happened.