dialog always recalculates the Aspect ratio setting based upon the
given Canvas size. This ensures pixels are always square.
-\item[Color model:] \index{color model} the internal color space of \CGG{} is X11 sRGB
+\item[Color model:] \index{color!model} the internal color space of \CGG{} is X11 sRGB
without color profile. \CGG{} always switches to sRGB when applying
filters or using the compositing engine. Different case for
decoding/playback or encoding/output; the project will be stored in