Hi Pilou
>>Does it possible to hide only seams generator automatically? (Select?, script? )
>>Because if you hide edges, "edges of intersection" after boolean union are hidden too!
>>Or a special box on the browser?

Yes for seams from BaseObjects only.
Shortcut: H or ...........
script:var gd = moi.geometryDatabase; var breps = gd.getObjects().getBreps(); for ( var i = 0; i < breps.length; ++i ) breps.item(i).getSeamEdges().setProperty( 'hidden', true );

Bevor

After

see, not everything goes in hidden status (Front right)