Explanation

README.md

@@ -14,12 +14,14 @@ size_categories:
 
 This dataset contains 42300 items in total. There are 9 curriculums each containing 4700 items.
 
-The `width x height` is between `3x3` and `14x14`.
+The images are between `3x3` and `14x14`.
 
 Each item in this dataset is a markdown file.
 
 The markdown file has these sections: `Input`, `Output without wrap`, `Output with wrap`, `Status`.
 
+Each of the `Input` images are unique.
+
 The `Perform N steps` has these variants:
-- When it's `Perform 1 step.` then only 1 iteration is performed. 
-- When it's `Perform 2 steps.`, then 2 iterations have to be performed which is harder.
+- When it's `Perform 1 step` then one iteration is performed, easy.
+- When it's `Perform 2 steps` then two iterations are performed, hard.