Surface extend

Is there a way to to extend a surface by (from - to ) instead of factor ? Thanks

Hi Mark - not in V5 - you can set the distance ‘factor’ by picking two points in the viewport but this will only be an actual 3dextension distance in a limited number of cases. If in doubt, ExtentSrf too far, then Split with an isocurve at the location you really want. V6 will allow interactive extending.