How do we change the Alias Info in SL7

I am trying to figure out how to change the Alias Info? For example in GL Batch Register you have your sort. If you click F3 it takes you into Field List. The field list has two columns: Record.Fieldname and Alias Info. I am trying to change the Alias info and give it names since its blank. At the moment you have fieldnames like: batch.cpnyid, batch.crtot, batch.curydrtot, and vs_company.intercpnyid. Any tips? Thanks!