Hello, I want to search whether my models are close enough to be exactly apart from each other by the distance I specify. findClash appear to be tailor-made for the exact task I was hoping to do, but unfortunately, it appear to only search nearby atoms, not the links, even if I select the entire model which has both markers and links incorporated as its component. The only way that I can make my entire MarkerSet to be competent for findClash was to use Tom's *dividelinks.py* script ( http://plato.cgl.ucsf.edu/trac/chimera/attachment/wiki/Scripts/dividelinks.p...) to add *n* number of marker s along the link of two marker that I selected. Q1. Can I ever specify MarkerSet Link by *atom-spec *commands, to use findClash on the inter-model links as well, not only for the markers? Q2. Is there any other function than findClash that allow me to find any inter-model (never atoms within the same model) atom or link's distance that I specify exist? Best, Jun Ha Song.