{image: dices.png}
{image: "image with spaces.png"}

{image: dices.png size=20%x     }
{image: "image with spaces.png"    size=x20%}
{image:        dices.png size=20%x10%}

{image: dices.png size=2cmx}
{image: "image with spaces.png" size=x2cm}
{image: dices.png size=2cmx1cm}

{image: dices.png size=2emx}
{image: "image with spaces.png" size=x2em}
{image: dices.png size=2emx1em}

{image: dices.png size=50ptx}
{image: "image with spaces.png" size=x50pt}
{image: dices.png size=50ptx100pt}

{image: dices.png size=2.5cmx}
{image: "image with spaces.png" size=x2.5cm}
{image: dices.png size=2.5cmx1.5cm}

{image: dices.png size=3cmx10%}
{image: "image with spaces.png" size=10%x3cm}
{image: dices.png size=x}

{image: dices.png error=foo}
{image: "image with spaces.png" dices.png}
{image: dices.png size=2exx3km}