1 | initial version |

You should be using

```
sage: from sage.repl.rich_output import get_display_manager
sage: dm = get_display_manager()
sage: dm.preferences.graphics='disable'
```

The `EMBEDDED_MODE`

is probably a left over of older Sage.

2 | No.2 Revision |

You should be using

```
sage: from sage.repl.rich_output import get_display_manager
sage: dm = get_display_manager()
sage: dm.preferences.graphics='disable'
```

The other possibilities for graphics are 'raster' (for png) and 'vector' (for pdf).

The `EMBEDDED_MODE`

is probably a left over of older ~~Sage.~~Sage versions.

3 | No.3 Revision |

You should be using

```
sage: from sage.repl.rich_output import get_display_manager
sage: dm = get_display_manager()
sage: dm.preferences.graphics='disable'
```

The other possibilities for graphics are ~~'raster' ~~`'raster'`

(for png) and ~~'vector' ~~`'vector'`

(for pdf).

The `EMBEDDED_MODE`

is probably a left over of older Sage versions.

EDIT: you probably want to create a `backend_cantor.py`

modeled on the various `backend_XXX.py`

in `$SAGE_ROOT/src/sage/repl/rich_output/`

(see e.g. on github).

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