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#### 7.13.3 Embedding Charts

You can embed chart text in PNG files by using the `-e`. Then you can use this PNG file as an input file (and open it in the GUIs, too). You can extract the source text from a PNG file by using `-T src`.

You can also embed charts in PPT files, by using `-T embed` and specifying an existing `pptx` file as output. This will append a slide and place the chart in the middle of it. Using `-T embed:<slide>` will place the chart on an existing slide, identified by its number. Numbers start from 1 and you get an error if the slideshow does not have as many slides. Finally, specifying `-T embed:<slide>:<chart>` will replace an existing chart on the given slide. Charts on a slide are numbered from one in Z-order, where chart #1 is the one on the back.

You can extract the source text from a PPT file, by appending the slide and chart number after the input filename, like `msc-gen my.pptx:2:1`. Adding `-T src` will save the chart text, but other output graphics formats are also possible. The following example updates the chart with a given design.

    msc-gen my.pptx:2:1 -T embed:2:1 -o my.pptx --design=round_green

In order to see what slides contain what charts, use `msc-gen --list-embedded my.pptx`.