01
Define the labels and the meaning of a line
Label the entrance E, the catalogue stand C and the reading table T. In this exercise, a line means the intended sequence of a visitor’s first three stops, not a measured route or an unobstructed path. Write that meaning beside both versions. The starting sequence is E to T to C; the proposed sequence is E to C to T. Keeping the labels and line meaning consistent allows the reader to compare the intended order without assuming that the positions or distances in the sketch have been surveyed.
02
Record the proposed change in a short ledger
Create a row with four fields: item changed, earlier arrangement, proposed arrangement and reason. The example identifies C as the moved item, records its earlier position near the table and proposes a position beside E. The reason is to make the catalogue an earlier stop in the intended sequence. This is an intention, not evidence about what visitors will actually do. Retain both sketches with the ledger so the explanation remains attached to the change. A new drawing alone would show the proposal but lose the reasoning that prompted it.
03
Keep questions separate from decisions
Add an open-questions area for matters the schematic cannot answer, including whether the stand fits the proposed location and what other use of that space needs consideration. Name the person responsible for checking each question when adapting the exercise to a real project. Leave the proposal marked for review until the relevant checks have been completed. The finished exercise contains two labelled versions, a shared legend, a change row and unresolved questions. It preserves a discussion about an arrangement without presenting the sketch as authorisation to implement it.