diff --git a/README.md b/README.md
index 4097f55..93ec54e 100644
--- a/README.md
+++ b/README.md
@@ -12,50 +12,50 @@ The smallest hexagon can be drawn on a 5x3 grid and contains 3 free slots in the
 
 ### Simple lines (11 glyphs)
 
-![](images/chars/large_flat_top/simple_corner_lower_left.png)
-![](images/chars/large_flat_top/simple_corner_lower_right.png)
-![](images/chars/large_flat_top/simple_corner_upper_left.png)
-![](images/chars/large_flat_top/simple_corner_upper_right.png)
+![](images/chars/large_flat_top/simple_corner_bottom_left.png)
+![](images/chars/large_flat_top/simple_corner_bottom_right.png)
+![](images/chars/large_flat_top/simple_corner_top_left.png)
+![](images/chars/large_flat_top/simple_corner_top_right.png)
 ![](images/chars/large_flat_top/simple_corner_left.png)
 ![](images/chars/large_flat_top/simple_corner_right.png)
-![](images/chars/large_flat_top/simple_fork_right.png)
 ![](images/chars/large_flat_top/simple_fork_left.png)
-![](images/chars/large_flat_top/simple_horizontal_line.png)
-![](images/chars/large_flat_top/simple_diagonal_rising.png)
-![](images/chars/large_flat_top/simple_diagonal_falling.png)
+![](images/chars/large_flat_top/simple_fork_right.png)
+![](images/chars/large_flat_top/simple_line_horizontal.png)
+![](images/chars/large_flat_top/simple_line_rising.png)
+![](images/chars/large_flat_top/simple_line_falling.png)
 
 ![](./images/examples/large_flat_top_simple.png)
 
 ### Double lines (11 glyphs)
 
-![](images/chars/large_flat_top/double_corner_lower_left.png)
-![](images/chars/large_flat_top/double_corner_lower_right.png)
-![](images/chars/large_flat_top/double_corner_upper_left.png)
-![](images/chars/large_flat_top/double_corner_upper_right.png)
+![](images/chars/large_flat_top/double_corner_bottom_left.png)
+![](images/chars/large_flat_top/double_corner_bottom_right.png)
+![](images/chars/large_flat_top/double_corner_top_left.png)
+![](images/chars/large_flat_top/double_corner_top_right.png)
 ![](images/chars/large_flat_top/double_corner_left.png)
 ![](images/chars/large_flat_top/double_corner_right.png)
-![](images/chars/large_flat_top/double_fork_right.png)
 ![](images/chars/large_flat_top/double_fork_left.png)
-![](images/chars/large_flat_top/double_horizontal_line.png)
-![](images/chars/large_flat_top/double_diagonal_rising.png)
-![](images/chars/large_flat_top/double_diagonal_falling.png)
+![](images/chars/large_flat_top/double_fork_right.png)
+![](images/chars/large_flat_top/double_line_horizontal.png)
+![](images/chars/large_flat_top/double_line_rising.png)
+![](images/chars/large_flat_top/double_line_falling.png)
 
 ![](./images/examples/large_flat_top_double.png)
 
 ### Mixed (12 glyphs)
 
-![](images/chars/large_flat_top/simple_fork_right_double_lower_right.png)
-![](images/chars/large_flat_top/simple_fork_left_double_lower_left.png)
-![](images/chars/large_flat_top/simple_fork_right_double_upper_right.png)
-![](images/chars/large_flat_top/simple_fork_left_double_upper_left.png)
-![](images/chars/large_flat_top/double_fork_right_simple_left.png)
-![](images/chars/large_flat_top/double_fork_left_simple_right.png)
-![](images/chars/large_flat_top/double_fork_right_simple_upper_right.png)
-![](images/chars/large_flat_top/double_fork_left_simple_upper_left.png)
-![](images/chars/large_flat_top/double_fork_right_simple_lower_right.png)
-![](images/chars/large_flat_top/double_fork_left_simple_lower_left.png)
-![](images/chars/large_flat_top/simple_fork_right_double_left.png)
-![](images/chars/large_flat_top/simple_fork_left_double_right.png)
+![](images/chars/large_flat_top/mixed_simple_fork_left_double_bottom_left.png)
+![](images/chars/large_flat_top/mixed_simple_fork_left_double_right.png)
+![](images/chars/large_flat_top/mixed_simple_fork_left_double_top_left.png)
+![](images/chars/large_flat_top/mixed_simple_fork_right_double_bottom_right.png)
+![](images/chars/large_flat_top/mixed_simple_fork_right_double_left.png)
+![](images/chars/large_flat_top/mixed_simple_fork_right_double_top_right.png)
+![](images/chars/large_flat_top/mixed_double_fork_left_simple_bottom_left.png)
+![](images/chars/large_flat_top/mixed_double_fork_left_simple_right.png)
+![](images/chars/large_flat_top/mixed_double_fork_left_simple_top_left.png)
+![](images/chars/large_flat_top/mixed_double_fork_right_simple_bottom_right.png)
+![](images/chars/large_flat_top/mixed_double_fork_right_simple_left.png)
+![](images/chars/large_flat_top/mixed_double_fork_right_simple_top_right.png)
 
 ![](./images/examples/large_flat_top_mixed.png)
 
diff --git a/images/chars/large_flat_top/double_corner_lower_left.png b/images/chars/large_flat_top/double_corner_bottom_left.png
similarity index 100%
rename from images/chars/large_flat_top/double_corner_lower_left.png
rename to images/chars/large_flat_top/double_corner_bottom_left.png
diff --git a/images/chars/large_flat_top/double_corner_lower_right.png b/images/chars/large_flat_top/double_corner_bottom_right.png
similarity index 100%
rename from images/chars/large_flat_top/double_corner_lower_right.png
rename to images/chars/large_flat_top/double_corner_bottom_right.png
diff --git a/images/chars/large_flat_top/double_corner_upper_left.png b/images/chars/large_flat_top/double_corner_top_left.png
similarity index 100%
rename from images/chars/large_flat_top/double_corner_upper_left.png
rename to images/chars/large_flat_top/double_corner_top_left.png
diff --git a/images/chars/large_flat_top/double_corner_upper_right.png b/images/chars/large_flat_top/double_corner_top_right.png
similarity index 100%
rename from images/chars/large_flat_top/double_corner_upper_right.png
rename to images/chars/large_flat_top/double_corner_top_right.png
diff --git a/images/chars/large_flat_top/double_diagonal_falling.png b/images/chars/large_flat_top/double_line_falling.png
similarity index 100%
rename from images/chars/large_flat_top/double_diagonal_falling.png
rename to images/chars/large_flat_top/double_line_falling.png
diff --git a/images/chars/large_flat_top/double_horizontal_line.png b/images/chars/large_flat_top/double_line_horizontal.png
similarity index 100%
rename from images/chars/large_flat_top/double_horizontal_line.png
rename to images/chars/large_flat_top/double_line_horizontal.png
diff --git a/images/chars/large_flat_top/double_diagonal_rising.png b/images/chars/large_flat_top/double_line_rising.png
similarity index 100%
rename from images/chars/large_flat_top/double_diagonal_rising.png
rename to images/chars/large_flat_top/double_line_rising.png
diff --git a/images/chars/large_flat_top/double_fork_left_simple_lower_left.png b/images/chars/large_flat_top/mixed_double_fork_left_simple_bottom_left.png
similarity index 100%
rename from images/chars/large_flat_top/double_fork_left_simple_lower_left.png
rename to images/chars/large_flat_top/mixed_double_fork_left_simple_bottom_left.png
diff --git a/images/chars/large_flat_top/double_fork_left_simple_right.png b/images/chars/large_flat_top/mixed_double_fork_left_simple_right.png
similarity index 100%
rename from images/chars/large_flat_top/double_fork_left_simple_right.png
rename to images/chars/large_flat_top/mixed_double_fork_left_simple_right.png
diff --git a/images/chars/large_flat_top/double_fork_left_simple_upper_left.png b/images/chars/large_flat_top/mixed_double_fork_left_simple_top_left.png
similarity index 100%
rename from images/chars/large_flat_top/double_fork_left_simple_upper_left.png
rename to images/chars/large_flat_top/mixed_double_fork_left_simple_top_left.png
diff --git a/images/chars/large_flat_top/double_fork_right_simple_lower_right.png b/images/chars/large_flat_top/mixed_double_fork_right_simple_bottom_right.png
similarity index 100%
rename from images/chars/large_flat_top/double_fork_right_simple_lower_right.png
rename to images/chars/large_flat_top/mixed_double_fork_right_simple_bottom_right.png
diff --git a/images/chars/large_flat_top/double_fork_right_simple_left.png b/images/chars/large_flat_top/mixed_double_fork_right_simple_left.png
similarity index 100%
rename from images/chars/large_flat_top/double_fork_right_simple_left.png
rename to images/chars/large_flat_top/mixed_double_fork_right_simple_left.png
diff --git a/images/chars/large_flat_top/double_fork_right_simple_upper_right.png b/images/chars/large_flat_top/mixed_double_fork_right_simple_top_right.png
similarity index 100%
rename from images/chars/large_flat_top/double_fork_right_simple_upper_right.png
rename to images/chars/large_flat_top/mixed_double_fork_right_simple_top_right.png
diff --git a/images/chars/large_flat_top/simple_fork_left_double_lower_left.png b/images/chars/large_flat_top/mixed_simple_fork_left_double_bottom_left.png
similarity index 100%
rename from images/chars/large_flat_top/simple_fork_left_double_lower_left.png
rename to images/chars/large_flat_top/mixed_simple_fork_left_double_bottom_left.png
diff --git a/images/chars/large_flat_top/simple_fork_left_double_right.png b/images/chars/large_flat_top/mixed_simple_fork_left_double_right.png
similarity index 100%
rename from images/chars/large_flat_top/simple_fork_left_double_right.png
rename to images/chars/large_flat_top/mixed_simple_fork_left_double_right.png
diff --git a/images/chars/large_flat_top/simple_fork_left_double_upper_left.png b/images/chars/large_flat_top/mixed_simple_fork_left_double_top_left.png
similarity index 100%
rename from images/chars/large_flat_top/simple_fork_left_double_upper_left.png
rename to images/chars/large_flat_top/mixed_simple_fork_left_double_top_left.png
diff --git a/images/chars/large_flat_top/simple_fork_right_double_lower_right.png b/images/chars/large_flat_top/mixed_simple_fork_right_double_bottom_right.png
similarity index 100%
rename from images/chars/large_flat_top/simple_fork_right_double_lower_right.png
rename to images/chars/large_flat_top/mixed_simple_fork_right_double_bottom_right.png
diff --git a/images/chars/large_flat_top/simple_fork_right_double_left.png b/images/chars/large_flat_top/mixed_simple_fork_right_double_left.png
similarity index 100%
rename from images/chars/large_flat_top/simple_fork_right_double_left.png
rename to images/chars/large_flat_top/mixed_simple_fork_right_double_left.png
diff --git a/images/chars/large_flat_top/simple_fork_right_double_upper_right.png b/images/chars/large_flat_top/mixed_simple_fork_right_double_top_right.png
similarity index 100%
rename from images/chars/large_flat_top/simple_fork_right_double_upper_right.png
rename to images/chars/large_flat_top/mixed_simple_fork_right_double_top_right.png
diff --git a/images/chars/large_flat_top/simple_corner_lower_left.png b/images/chars/large_flat_top/simple_corner_bottom_left.png
similarity index 100%
rename from images/chars/large_flat_top/simple_corner_lower_left.png
rename to images/chars/large_flat_top/simple_corner_bottom_left.png
diff --git a/images/chars/large_flat_top/simple_corner_lower_right.png b/images/chars/large_flat_top/simple_corner_bottom_right.png
similarity index 100%
rename from images/chars/large_flat_top/simple_corner_lower_right.png
rename to images/chars/large_flat_top/simple_corner_bottom_right.png
diff --git a/images/chars/large_flat_top/simple_corner_upper_left.png b/images/chars/large_flat_top/simple_corner_top_left.png
similarity index 100%
rename from images/chars/large_flat_top/simple_corner_upper_left.png
rename to images/chars/large_flat_top/simple_corner_top_left.png
diff --git a/images/chars/large_flat_top/simple_corner_upper_right.png b/images/chars/large_flat_top/simple_corner_top_right.png
similarity index 100%
rename from images/chars/large_flat_top/simple_corner_upper_right.png
rename to images/chars/large_flat_top/simple_corner_top_right.png
diff --git a/images/chars/large_flat_top/simple_diagonal_falling.png b/images/chars/large_flat_top/simple_line_falling.png
similarity index 100%
rename from images/chars/large_flat_top/simple_diagonal_falling.png
rename to images/chars/large_flat_top/simple_line_falling.png
diff --git a/images/chars/large_flat_top/simple_horizontal_line.png b/images/chars/large_flat_top/simple_line_horizontal.png
similarity index 100%
rename from images/chars/large_flat_top/simple_horizontal_line.png
rename to images/chars/large_flat_top/simple_line_horizontal.png
diff --git a/images/chars/large_flat_top/simple_diagonal_rising.png b/images/chars/large_flat_top/simple_line_rising.png
similarity index 100%
rename from images/chars/large_flat_top/simple_diagonal_rising.png
rename to images/chars/large_flat_top/simple_line_rising.png