Hi Johannes,
I already submitted such feature request that to enable axis break with LT.
As to check whether an axis break exist, there's not an object property for this but since if there's no axis break, properties such as the layer.axis.break.from will return a missing value, so you could use this to determine, an example would be:
if(layer.x.break.from==0/0)
type -b "There's no axis break";
else
type -b "There's an axis break";
Kathy
Originlab