-The BD style amoeba has some special properties: When it is completely
-surrounded, it instantly turns into the specified content. But if this
-cannot be achieved in a certain amount of time, this amoeba instantly
-turns to BD boulders instead. BD amoeba is the only amoeba that can be
-smothered by the player.
+The BD style Amoeba grows randomly through empty space and sand.
+When it is enclosed, it stops growing and transforms into diamonds (or
+some other, configurable game element).
-All amoeba types must share the same settings.
+When it has grown too big, it suddenly transforms into rocks. At the beginning,
+it can grow slowly, but after some time it starts growing very rapidly.
-Butterflies always try to follow the right side of a wall or other elements.
-Touching them is deadly.
+Butterflies move through empty space. Touching them is deadly.. Butterflies
+blow up when hit by a falling rock or diamond. Amoeba is also deadly for them.
+They explode into diamonds, producing a 3x3 square of diamonds. Butterflies are
+spinning right. They prefer turning right, usually clockwise.
-They will explode in 9 BD style diamonds if smashed by a rock or BD style
-diamond. If dynabombed, they will become one BD style diamond.
-Other explosions simply destroy them.
+There is another variant of the butterfly that is spinning left.
-BD style levels require a certain amount of these diamonds to be collected
-to complete the level.
+A certain amount of these diamonds must be collected to solve a BD style level.
-Fireflies always try to follow the left side of a wall or other elements.
-Touching them is deadly.
+Fireflies move through empty space. Touching them is deadly.. Fireflies
+blow up when hit by a falling rock or diamond. Amoeba is also deadly for them.
+They explode into space, producing a 3x3 square of empty space. Fireflies are
+spinning left. They prefer turning left, usually counter-clockwise.
-Fireflies can be smashed by BD style diamonds in addition to rocks.
+There is another variant of the firefly that is spinning right.
-This is a BD style magic wall. It gets activated for a limited duration by
-rocks or gems that fall on it. While activated, they can fall through it, and
-rocks turn into BD style diamonds, and gems turn into BD style rocks.
-After the magic wall has stopped running, it cannot be activated again.
+This BD style magic wall converts rocks into diamonds and vice versa. Note that
+a magic wall can only be activated for some limited time. It can also turn mega
+rocks into nitro packs, nitro packs into mega rocks. Even flying diamonds and
+rocks pass them to be converted into each other, but they do that from bottom to
+up, of course.
The duration in seconds for which magic walls are active is configurable.
A duration of zero will let the wall run forever.
-This is a BD style rock. It's not much different from a regular rock,
-but it can be jump-pushed by snapping it.
+This is a BD style rock (also called stone or boulder). It can be pushed by the
+player, and can be dropped on enemies to make them explode.
+This rock can be jump-pushed by snapping it.
-This is the BD style wall.
+This is a BD style wall. It cannot be moved and cannot be passed by the player,
+but explosion will destroy it.
-Unlike most other walls, falling objects slip off this wall,
-although it does not look rounded or crumbled.
-
-It can be destroyed by explosions.
+Even though it may not look like that, objects that can fall will slip off this
+wall to the left or to the right.