{xo'e} to mean "unspecified string of digits"

[mudri]

Is using {xo'e} like any other PA digit allowed? I'm confused because vlasisku labels it as "PA …BOI", which I'm not to sure about.

If it is given the definition in the title (and it functions like any old PA), then it could be a way of writing modular arithmetic. For example, you could have: {li xo'e vo pi'i xo'e ci du li xo'e no ju'u xa}, if the {ju'u xa} is assumed to refer to all numbers in the equation. For the sake of brevity, the first two {xo'e}s would probably usually be dropped, since the expression would still be true and it wouldn't rely on the {ju'u} carrying over.