1·Take

The caller supplies value_1 at execution time, declared here as a named parameter for later steps to reference.

2·Take

A second parameter named value_2 is declared, also filled in by the caller when the plug runs.

3·Compare two values

Comparing value_1 against value_2, this step returns true when value_1 is greater than value_2.

4·Set

Assigning that comparison result to a named variable called value_1_is_greater lets later steps read it by name.

5·Set

Setting value_delta to 0 gives the difference variable a starting value before either branch overwrites it.

6·Predicate

Requiring value_1_is_greater to equal true opens a branch that runs only when value_1 exceeded value_2.

7·Calculate

Within that branch, value_2 is subtracted from value_1, producing the positive difference.

8·Set

Storing that difference into value_delta records the gap for the case where value_1 was larger.

9·Else branch

Opening the else branch handles the case where value_1 was not greater than value_2.

10·Calculate

Here value_1 is subtracted from value_2, producing the difference in the other direction.

11·Set

Writing that difference into the variable delta records the gap for this branch.

12·End block

Closing the innermost open block ends the conditional.

13·Bubble

Surfacing value_1_is_greater exposes which value was larger as an output.

14·Bubble

Also surfaced is value_delta, exposing the computed difference as an output of this plug.