Design: 02.01.02.01/P03

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PROGRAM 3: Deletion of a non-existent structure

CHARACTERISTICS: nnnn

OPERATOR SCRIPT: passive

DESIGN:

Use <open structure> and <execute structure> to set up the CSS
as follows:

        100
        / \
     1 /   \ 2
      /     \
   105       110

The nodes of the graph (100 and above) represent structures, and the
labelled edges are references to invoke (lower) structures.  The
labels (1-2) represent the element position of the <execute structure>
function within the calling structure.

TEST: #SR 3
      "Deleting a non-existent structure should have no effect on the
       contents of the CSS."

nostid = 25
<delete structure> nostid

examine the contents of the CSS for the existing structure identifiers
and the associated element references
                                            100
                                            / \
pass/fail depending on (CSS contents =   1 /   \ 2
                                          /     \
                                       105       110   )

END PROGRAM 3