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| Graphical Element | Interpretation |
|---|---|
| Indicates a mandatory element (exactly 1). The name of the element is written in lowercase. It is used both in diagrams that indicate data required for a scenario and in diagrams that provide NOTAM text production rules. |
| Indicates an optional element (0 or 1). The name of the element is written in lowercase. It is used both in diagrams that indicate data required for a scenario and in diagrams that provide NOTAM text production rules. |
| Indicates a mandatory element, which may occur several times (1 or more). The name of the element is written in lowercase. It is used both in diagrams that indicate data required for a scenario and in diagrams that provide NOTAM text production rules. |
| Indicates an optional element, but which may occur several times (0, 1 or more). The name of the element is written in lowercase. It is used both in diagrams that indicate data required for a scenario and in diagrams that provide NOTAM text production rules. |
| Denotes a piece of text that should be inserted as such in the production of the NOTAM text. |
| Indicates a choice between two elements. Either one or the other one must be used. It is used both in diagrams that indicate data required for a scenario and in diagrams that provide NOTAM text production rules. |
| More than one element can appear on an optional, choice or mandatory branch. It is used both in diagrams that indicate data required for a scenario and in diagrams that provide NOTAM text production rules. |
| The number in brackets “(1)” references a rule or an explanation provided in relation with that element. It is used especially in diagrams that provide text NOTAM production rules. It can also occur on text elements and even on complete branches. |
| Indicates that a punctuation mark (period) shall be inserted at that place, as end of a sentence. It is used in diagrams that provide text NOTAM production rules. |
| Indicates that a comma shall be inserted at that place, as punctuation mark. It is used in diagrams that provide text NOTAM production rules. |
| Indicates that a new line shall be inserted at that place, in order to improve the readability of the NOTAM text. It is used in diagrams that provide text NOTAM production rules. |
NotesNotes:
- Further in the document, the EBNF source file is provided below each diagram concerned.
- The graphical representation of the EBNF rules was created with the free EBNF Visualizer 1.1.
AIXM mapping notation
On contrary to the typical xPath annotation (double slash "//" for any descendant node, single slash "/" for immediate descendant) to provide a simplified identification to a sometimes lengthy path for AIXM mapping a scaled down notation is used.
| Mapping example | Description |
|---|---|
| RouteSegment/RouteAvailability/Timesheet | A single slash ("/") indicates any navigable association of the current element. In the sense of descendancy it may be (great-)grandchild or a child. |
AirspaceActivation.annotation AirspaceLayer.upperLimit | A dot (".") indicates immediate navigable association or an attribute of a class. In the sense of descendancy, it is an immediate descendant of the current element - a child. |