The name of the session variable where the extension save the text of the image created. To be safe the text cannot ne put inside the page form so the extension generate a random text and save the value in a session. When you must validate the form you must compare the value of this session with the value of the form field.
The width of the generated image
The height of the generated image
The length of the random text in number of characters
Create codes using this word list
How much to distort image, higher = more distortion.
The background color of the generated image
The background image of the generated image
The minimum and maximun angle in degrees, with 0 degrees being left-to-right reading text.
Higher values represent a counter-clockwise rotation.
For example, a value of 90 would result in bottom-to-top reading text.
This value along with maximum angle distance do not need to be very high with perturbation
Draw vertical and horizontal lines on the image over text.
Color of lines drawn over text
If checked show an icone to reload the image and change the security code
If checked show an icone to play the code (only english language)
The text colors to use for drawing characters
* Make sure this contrasts well with the background color or image.