>DELETE ALL for (SubStr(AllTrim(jtspart0),1,1) = "C" or SubStr(jtspart0,1,1) = "=" or AT("|",jtspart0)=0 or AT(",",SubStr(jtspart0,1,29))>0)

In addition to what Craig mentioned, I also see a flaw with your FOR clause based on your description. I think that the AT("|",jtspart0)=0 should be <>0 instead.

--Brad