Watermark X Position mark-x

Defines the x-position of the watermark in relation to the left-most edge of the base image.

The value can be a positive or negative integer. If the value is negative, the image will be partially outside the base image boundary. The markx parameter will overwrite markalign=left, markalign=center, and markalign=right if set.

See the API specification for more information about this parameter's value ranges and format.