diff --git a/docs/lib3x-lsystem2.md b/docs/lib3x-lsystem2.md
index 4600e7e4..a67bbe27 100644
--- a/docs/lib3x-lsystem2.md
+++ b/docs/lib3x-lsystem2.md
@@ -23,6 +23,7 @@
 - `start` : The starting point of the turtle. Default to `[0, 0]`.
 - `forward_chars` : Chars used for forwarding after the last iteration. Default to `'F'`. 
 - `rule_prs` : The probabilities for taking rules. If each rule is chosen with a certain probability, it's a stochastic L-system. Each probability value for a rule ranges from 0 to 1.
+- `seed` : Optional. Seed value for random number generator for repeatable results. **Since:** 3.3.
 
 ## Examples
 
diff --git a/docs/lib3x-lsystem3.md b/docs/lib3x-lsystem3.md
index f11d2b44..e436f3a8 100644
--- a/docs/lib3x-lsystem3.md
+++ b/docs/lib3x-lsystem3.md
@@ -27,6 +27,7 @@
 - `start` : The starting point of the turtle. Default to `[0, 0]`.
 - `forward_chars` : Chars used for forwarding after the last iteration. Default to `'F'`. 
 - `rule_prs` : The probabilities for taking rules. If each rule is chosen with a certain probability, it's a stochastic L-system. Each probability value for a rule ranges from 0 to 1.
+- `seed` : Optional. Seed value for random number generator for repeatable results. **Since:** 3.3.
 
 ## Examples
 
diff --git a/src/experimental/note.md b/src/experimental/note.md
index 111b5643..c670d5e4 100644
--- a/src/experimental/note.md
+++ b/src/experimental/note.md
@@ -17,8 +17,6 @@ new:
 - lemniscate_curve?
 - perlin_sphere?
 
-- lsystem2, lsystem3, add seed param
-
 doc-ed
 
     deprecated:
@@ -33,4 +31,4 @@ doc-ed
     - matrix/m_replace
     - triangle/tri_subdivide
 
-    
+    - lsystem2, lsystem3, add seed param