global variables HP-PPL

[Han]

It is neither good nor bad. You just need to be aware of the scope of the variables and which has higher priority. It is no different than the following example:

Code:

x:=0;

export myprogram()
begin
  local x;
  x:=2
end;

myprogram() has a local variable named x that has higher priority than the x declared outside of myprogram().