English: In this simple letter detection task, the red circles indicate target letter identifications and the green underlines indicate instances of the target letter in which the reader has missed when reading the passage.
to share – to copy, distribute and transmit the work
to remix – to adapt the work
Under the following conditions:
attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
Minor improvements: replacement with higher resolution versions of the same file, however, without using artificial methods to generate higher resolution <small></small>