plgpage: Get page parameters

`plgpage`: Get page parameters
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#### `plgpage`: Get page parameters

`plgpage (` | p_xp,
| p_yp,
| p_xleng,
| p_yleng,
| p_xoff,
| p_yoff`)`;

Gets the current page configuration. The length and offset values are expressed in units that are specific to the current driver. For instance: screen drivers will usually interpret them as number of pixels, whereas printer drivers will usually use mm.

`p_xp` (``PLFLT_NC_SCALAR``, output)

  Returned value of the number of pixels/inch (DPI) in x.

`p_yp` (``PLFLT_NC_SCALAR``, output)

  Returned value of the number of pixels/inch (DPI) in y.

`p_xleng` (``PLINT_NC_SCALAR``, output)

  Returned value of the x page length.

`p_yleng` (``PLINT_NC_SCALAR``, output)

  Returned value of the y page length.

`p_xoff` (``PLINT_NC_SCALAR``, output)

  Returned value of the x page offset.

`p_yoff` (``PLINT_NC_SCALAR``, output)

  Returned value of the y page offset.

Redacted form: `plgpage(p_xp, p_yp, p_xleng, p_yleng, p_xoff, p_yoff)`

This function is used in examples 14 and 31.

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