Can I move the circle by touch?

Questions
1 
-- Art

-- Use this function to perform your initial setup
function setup()
    print("Hello World!")
end

-- This function gets called once every frame
function draw()
    -- This sets a dark background color 
    background(0, 85, 255, 255)

    -- This sets the line thickness
    strokeWidth(5)

    -- Do your drawing here
    ellipse(WIDTH/2, HEIGHT/2, 100)
    
    -- This sets the outline color
    stroke(26, 236, 239, 255)
    
    -- This sets the ellipse color
    fill(4, 237, 241, 255)
    
end

This is the final result for a drawing tutorial I did on Bitbucket.org after clicking the button on the lower right side of the Codea main menu. Is it possible to move the circle around by touching it? I clicked the eye symbol on the keyboard that led me to the sound, touch, shaders, etc list. If I can move the circle, do I use some of the suggested lines of code for Touch, all of them, or something else?

2

@VersatileAlien Here’s an example of moving a circle using touch.

function setup()
    x=WIDTH/2
    y=HEIGHT/2
end

function draw()
    background(0)  
    fill(255)       
    ellipse(x,y,100)
end

function touched(t)
    if t.state==MOVING then
        x=t.x
        y=t.y
    end   
end