Use the Paths and Symbols properties panel # Symbols tab to modify the list of preprocessor symbols.

| Option | Description |
|---|---|
| Languages (left pane) | Displays language related to this file. |
| Symbol / Value | List of symbols related to given language. |
| Add... | Add new symbol. |
| Edit... | Modify selected symbol value. |
| Delete | Remove selected symbol. |
| Export / Unexport | Toggle selected symbol exported or not. |
| Show built-in values | Check to display system (built-in) includes. |
| Import Settings... | Import symbol settings. |
| Export Settings... | Export symbol settings. |
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