\gdlfunref{QUERY-BMP}
\gdlfunref{QUERY-DICOM}
\gdlfunref{QUERY-GIF}
\gdlfunref{QUERY-IMAGE}
\gdlfunref{QUERY-JPEG}
\gdlfunref{QUERY-PICT}
\gdlfunref{QUERY-PNG}
\gdlfunref{QUERY-PPM}
\gdlfunref{QUERY-TIFF}

\gdlfunref{READ-BMP}
\gdlfunref{READ-DICOM}
\gdlproref{READ-JPEG}
\gdlproref{READ-PICT}
\gdlfunref{READ-PNG}
\gdlfunref{READ-TIFF}
\gdlfunref{READ-XWD}

\gdlproref{WRITE-BMP}
\gdlproref{WRITE-JPEG}
\gdlproref{WRITE-PICT}
\gdlproref{WRITE-PNG}

\gdlfunref{BYTSCL}
\gdlfunref{CONVOL}
\gdlfunref{MEDIAN}
\gdlfunref{POLY-2D}
\gdlfunref{PREWITT}
\gdlfunref{RADON}
\gdlfunref{ROBERTS}
\gdlfunref{ROTATE}
\gdlfunref{REBIN}
\gdlfunref{SMOOTH}
\gdlfunref{SOBEL}
