> e) A path created using touch input

   <path d="M123 345C...." stroke-widths-position="points" 
stroke-widths-array="1, 1.1, 1.15..." />

Sorry, a little bit OT

Is here any plan to link other values than the width of the stroke ? Why not the color of the stroke ? 

Or the offset ? (I can't wait for http://w3-org.9356.n7.nabble.com/Feature-request-for-SVG2-stroke-position-td143888.html)

GML (http://www.graffitimarkuplanguage.com/g-m-l-spec/) allows storing of more parameter from an input (like the tilt or zaxis value) could we store those values too and use them as a binding source for different stroke properties.

<path d="M123 345C...." 
stroke-width:10px;
stroke-color:hsl(180,1,1);
array="pressure: 0.5, 1 ..."
array="tilt: 0.1, 0.9 ..."
array="z-axis: 0.5, 0.5 ... ">

<bind target="external-stroke-width, internal-stroke-width" source="pressure" />
<bind target="stroke-hue" source="tilt" min-hue="180" max-hue="360" />
<bind target="stroke-saturation" source="z-axis" min-hue="0" max-hue="1" />
</path>

this will draw a path starting with a width of 5px and a blue color then a width of 10px and a red color