naming schema of function inout like packages

. it might promote more familiarity by pre-naming parameters
as being components of pkg"x,
so then you can instantly recognize in the code
that p is a parameter by seeing it prefixed by x:
x`p .
. likewise, y could be reserved for naming
the value that is being returned .
. x is widely understood as the dependent variable
y is what comes after x, hence the result .