open command -- don't require file to exist ; https://github.com/sagemath/cloud/issues/175
open command -- don't require file to exist ; https://github.com/sagemath/cloud/issues/175

tscholl2/smc,sagemathinc/smc,tscholl2/smc,sagemathinc/smc,sagemathinc/smc,tscholl2/smc,tscholl2/smc,sagemathinc/smc,DrXyzzy/smc,DrXyzzy/smc,tscholl2/smc,DrXyzzy/smc,DrXyzzy/smc