Explanation of what the different configuration options are for...

Verification string length: This will change the length from 3 letters ( Short) to 5 ( Long) and at the same time make the image itself shorter or longer to make room for the letters.

Font case: Choose if you wish the letters in the verification image to be uppercase, lowercase or Mixed ( random).

Verification is case sensitive: Should the comparison between user input and the verification text be case sensitive or not. Case sensitive means that "A" does NOT equal "a", for example.

Color of the image background: Here you can set the background color of the verification image.

Color of the stripes: If you set a color here, there will be stripes going from left to right and from top to bottom over the letters in the verification image. This is used to make it harder for automated scripts to "read" the letters off the image.

Stripe density: The higher the density, the more stripes there will be on the image.

The fonts that will be used: Here you set the font files used for the letters that are generated in the verification image. Separate the font file names with ",".

If you want to generate your own fonts compatible with this plugin, check out this program: www.philiplb.de/şshowdownload=63&p=Downloads

Letter color possibilities: List all the colors that you want the generator to choose from when making the verification image. Separate the colors with an ",".

Image border color: If you want the verification image to be surrounded by a border, which usually looks nicer than without. Just set this to the color you want.