| Printing strips | Annotating strips | Augmenting strips |
| Interpreting strips |
| Controllers write on flight strips for different audiences: themselves, each other and as a legal record. The location identifies the purpose, facilitating interpretation by controllers and, ultimately, computers. |
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Themselves: The circle helps the controller quickly locate all flights landing at Paris's Orly airport (LFPO).
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Legal record: The last underlined flight level indicates the last authorized flight level.
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Other controllers: The "V" tells other controllers that the plane has been authorized to go directly to EPR without passing through CDN.
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| Identification | Exit Level | Flight Levels | Beacons | Notes | ID |
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