I'm starting out with webGL and have gone through some tutorials here:

http://learningwebgl.com/blog/?page_id=1217

I can take the first lesson as an example. In the function initBuffers() the buffer for a triangle is created like below:

Code :
function initBuffers() {
    triangleVertexPositionBuffer = gl.createBuffer();
    gl.bindBuffer(gl.ARRAY_BUFFER, triangleVertexPositionBuffer);
    var vertices = [
         0.0,  1.0,  0.0,
        0.0, -1.0,  0.0,
         1.0, -1.0,  0.0
    ];
    gl.bufferData(gl.ARRAY_BUFFER, new Float32Array(vertices), gl.STATIC_DRAW);
    triangleVertexPositionBuffer.itemSize = 3;
    triangleVertexPositionBuffer.numItems = 3;
...

The elements (or coordinates) in the vertex array goes from -1 to 1.

Now, what if I have coordinates with much smaller values like below:
var vertices = [
0.0207835, -0.0756165, 0.6492073,
0.02266111, -0.0711677, 0.6476236,
0.02020269, -0.08112079, 0.6501749];
They are not shown because (I assume) the values are too small. Where in the code do I tell webGl that it should "zoom" in so that the small-value vertices does become visible?

Thanks for help!