document that  we must define a DAG node before referencing it #4601
document that  we must define a DAG node before referencing it #4601

htcondor/htcondor,neurodebian/htcondor,htcondor/htcondor,neurodebian/htcondor,htcondor/htcondor,neurodebian/htcondor,neurodebian/htcondor,htcondor/htcondor,neurodebian/htcondor,neurodebian/htcondor,htcondor/htcondor,htcondor/htcondor,neurodebian/htcondor,neurodebian/htcondor,neurodebian/htcondor,htcondor/htcondor,htcondor/htcondor