# A key can distinguish two jobs · complete picture words

Original fictional seed-library example in before/proposed-repair panels. Before uses a square for both envelope shelf and empty-envelope tray, making the key ambiguous. After keeps square for envelope shelf and uses circle for empty-envelope tray; the word labels and key agree. The drawing proposes a consistent meaning change, not a real library repair, seed activity or proof a reader used it successfully. Child can use words/pointing/dictation instead of drawing shapes; colour is not needed.

[Whole original SVG](legend-repair.svg) · [Pictures and own aids](index.md)