Here are some examples to put text overlays on your images on-the-fly.
i_o_text you can specify the text, scale, font and color of the text you would like to put on the image.
i_c_y you can set the center of the text.
The args are separated using
_ and here is the list of args you can use.
You can refer to the text overlay API reference to see all the possible values for arguments.