creo4 config.pro option documentation for: SPIN_WITH_SILHOUETTES 
spin_with_silhouettes
no
*
, yes
Displays silhouette lines during the dynamic spinning of a model.
two previously laid out locations in a three-dimensional reference harness, display of the new cable updates automatically in pre-Release 13 flattened cable models.
ters).
yes - Displays offset correctly, according to value specified for the Detail
option witness_line_delta.