I assume that SDE,MJS,JSE is just an example and you are asking for a generic way of converting a list to an array. Then I would try
lcSource='SDE,MJS,JSE'
lcTransf=strtran(lcSource, ',', chr(13))
lcArray=alines(lcTransf)
Hugo
"The five senses obstruct or deform the apprehension of reality."
Jorge L. Borges?
"Premature optimization is the root of all evil in programming."
Donald Knuth, repeating C. A. R. Hoare
"To die for a religion is easier than to live it absolutely"
Jorge L. Borges
