Lengthening Improvements

The lengthener has been enhanced so that lengthening blocks can make space for themselves. This is available during both interactive and automatic lengthening operations and is configured on the 'High Speed' tab of the 'Routing Setup' dialog. The lengthener has also been enhanced so that it is possible to lengthen the ends of Trunks in order to meet skew between the two halves of a Differential Pair.

 In addition, 'Trombone Style Lengthening' has been introduced;