SoSaveImage(PathName As String, Channel As String, Format As String) : Saves a file to to the PathName specified in the Format specified. This converts the internal 15 bit representation of the image to a bitmap using the gamma specified by SetOpGamma or by 2.2 as the default and saves it as a file. This operation updates the bitmap returned by ControlRef but leaves the internal15 bit representation unchanged. The colour channels saved may be specified as "R", "G" or "B". "L" saves the luminance (grayscale) and "C" or anything else saves the full colour image. Note that in all cases a 24 bit 3 channel colour image is saved even if a single colour is specified. Note that a file extension is not added and must be specified as part of the PathName. The file formats are"J" for jpg : "B" for bmp : "G" for gif : "P" for png. Anything else is saved as jpg.