>>>>> "Amir" == Amir Karger <[EMAIL PROTECTED]> writes: Amir> I just tried it, and you're right, I get a "Double subscript" Amir> error. And yet, I must have put that bug into BUGS for a reason! Amir> Could it be that older forms of latex don't mind it? It may be Amir> something slightly different than a_b_c, but I definitely Amir> remember dealing with a file someone had sent me with something Amir> closely related to that. Hm... a_b_c does not work at _TeX_ level. And I doubt that things might have been different at any time. The proble is to differentiate between {a_b}_c and a_{b_c}. JMarc