By default RefToCondEnd is Flase and indexing reference point, to which Ident and BlockOffset are relative, points to the first checked token (by the ConditionList[0]). 

If RefToCondEnd is True, reference index points to the last checked token (by the last condition). In this case, indexing reference point will be less. 

See "Understanding of indexing" in the TTagBlockCondition topic.

TTagBlockCondition Properties