p = plot([1,2,3,4,5], title="x")[0]

text = p.addText(1.5, 3.6, "Test")

#Changing color
text.paint = Color.GREEN

#Changing font
import java.awt.Font as Font
text.font = Font("Verdana", Font.PLAIN, 12)

#Rotation
import math
text.rotationAngle = math.radians(90.0)

#Removing
p.removeText(text)