plgfont: Get family, style and weight of the current font

`plgfont`: Get family, style and weight of the current font
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#### `plgfont`: Get family, style and weight of the current font

`plgfont (` | p_family,
| p_style,
| p_weight`)`;

Gets information about current font. See the section called “FCI” for more information on font selection.

`p_family` (``PLINT_NC_SCALAR``, output)

  Returned value of the current font family. The available values are given by the PL_FCI_* constants in `plplot.h`. Current options are PL_FCI_SANS, PL_FCI_SERIF, PL_FCI_MONO, PL_FCI_SCRIPT and PL_FCI_SYMBOL. If p_family is NULL then the font family is not returned.

`p_style` (``PLINT_NC_SCALAR``, output)

  Returned value of the current font style. The available values are given by the PL_FCI_* constants in `plplot.h`. Current options are PL_FCI_UPRIGHT, PL_FCI_ITALIC and PL_FCI_OBLIQUE. If p_style is NULL then the font style is not returned.

`p_weight` (``PLINT_NC_SCALAR``, output)

  Returned value of the current font weight. The available values are given by the PL_FCI_* constants in `plplot.h`. Current options are PL_FCI_MEDIUM and PL_FCI_BOLD. If p_weight is NULL then the font weight is not returned.

Redacted form: `plgfont(p_family, p_style, p_weight)`

This function is used in example 23.

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