I (Marco Cimarosti) wrote:

> In *this* context [engineering], you can say that Hebrew
> and Yiddish use the same "script" [...], although they
> have different "orthographic systems" [...].
>
> Of course, this distinction can be meaningless in other
> contexts, such as the scientific study of writing
> systems.

On a second though, this distinction could also have some significance for
the study of writing system, limited to when the object of the study is on
the *visual* aspect of writing, and on the physical process of producing
written text.

When one concentrates in the calligraphic or typographic, functional aspects
such as whether vowels are written or not become unimportant. Going back to
Hebrew and Yiddish, one could say that the two languages share the same
graphic tradition, and that this can and should be seen as the graphic
tradition of the "Hebrew script" on its whole, regardless of whether this
"script" is used to implement the Hebrew "orthography" (an abjad) or the
Yiddish "orthography" (an alphabet).

_ Marco