Research Article
PaperCAD: A System for Interrogating CAD Drawings Using Small Mobile Computing Devices Combined with Interactive Paper
Table 11
Interpretation of cross-outs.
| Event | Correct | Incorrect |
| Correctly interpreted | 83 | | Ink capture failure (H) | | 1 | Drew “” instead of “” (U) | | 4 | Did not pause before writing new label or term (U) | | 6 | Did not realize the ink was not a valid label or term (U) | | 8 | Terms were not yet processed by the system (U) | | 2 | Not recognized (S) | | 5 | Location misinterpreted (S) | | 4 | Total | 83 | 26 |
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H: hardware error; U: user error; S: system error.
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