The instance-of arrows are inconsistent

[codeZeilen]

This is technical debt. Affected figures:

• Model/figures/initStringLookup.pdf
• Model/figures/fooNotFound.pdf

The current tool can not create the same arrows as Graffle was able to produce. The key next to the figures is consistent with the figure though. Future editions should address this again.

[LinqLover]

We could gradually replace all Graffle figures with either TikZ graphics or pure Morphic graphics.

Pro TikZ:

• "The LaTeX Way"/best typographic results
• accessible, not affected by Improve resolution of screenshots #35

Pro Morphic:

• "The Morphic Way"/makes more fun