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# Topic: display

| Tool | Description |
|--------|-------------|
| [g.mkfontcap](g.mkfontcap.md) | Generates the font configuration file by scanning various directories for fonts. |
| [g.pnmcomp](g.pnmcomp.md) | Overlays multiple PPM image files. |
| [g.ppmtopng](g.ppmtopng.md) | Converts between PPM/PGM and PNG image formats. |
| [r3.mkdspf](r3.mkdspf.md) | Creates a display file from an existing 3D raster map according to specified threshold levels. |

*See also the corresponding keyword for additional references:*

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