just creates a detached scope

just creates a detached scope

[%  just x=10, y=20 {
        # x and y are the only variables 
        # defined within this block
        z = x + y;
    }
%]
--EOF--
look inside...

Thus Spake Andy:

just is like with in that it creates a new variable scope. However, it is detached from the outer scope so that the code inside the block can only see the variables defined inside the block.