[Axiom-mail] several lines in a xterm

[fmaltey]

Hello, 

axiom inside texmacs is fine and I can type several lines with [shift-return].
But I prefer use my old emacs or an xterm and I can't do so.

How can I input one command in several lines.
Must I do a file and type after )read file.input ?
Is there another possibility with pipe ?

Must my emacs add a _ at the end of every line, and then how can I 
input an if...then...else ? 

Thanks a lot if you have an idea.

François