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-\section{Built-in Module \module{rgbimg}}
-\label{module-rgbimg}
-\bimodindex{rgbimg}
-
-The \module{rgbimg} module allows Python programs to access SGI imglib image
-files (also known as \file{.rgb} files). The module is far from
-complete, but is provided anyway since the functionality that there is
-enough in some cases. Currently, colormap files are not supported.
-
-The module defines the following variables and functions:
-
-\begin{excdesc}{error}
-This exception is raised on all errors, such as unsupported file type, etc.
-\end{excdesc}
-
-\begin{funcdesc}{sizeofimage}{file}
-This function returns a tuple \code{(\var{x}, \var{y})} where
-\var{x} and \var{y} are the size of the image in pixels.
-Only 4 byte RGBA pixels, 3 byte RGB pixels, and 1 byte greyscale pixels
-are currently supported.
-\end{funcdesc}
-
-\begin{funcdesc}{longimagedata}{file}
-This function reads and decodes the image on the specified file, and
-returns it as a Python string. The string has 4 byte RGBA pixels.
-The bottom left pixel is the first in
-the string. This format is suitable to pass to \function{gl.lrectwrite()},
-for instance.
-\end{funcdesc}
-
-\begin{funcdesc}{longstoimage}{data, x, y, z, file}
-This function writes the RGBA data in \var{data} to image
-file \var{file}. \var{x} and \var{y} give the size of the image.
-\var{z} is 1 if the saved image should be 1 byte greyscale, 3 if the
-saved image should be 3 byte RGB data, or 4 if the saved images should
-be 4 byte RGBA data. The input data always contains 4 bytes per pixel.
-These are the formats returned by \function{gl.lrectread()}.
-\end{funcdesc}
-
-\begin{funcdesc}{ttob}{flag}
-This function sets a global flag which defines whether the scan lines
-of the image are read or written from bottom to top (flag is zero,
-compatible with SGI GL) or from top to bottom(flag is one,
-compatible with X)\@. The default is zero.
-\end{funcdesc}