diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 8d41ca8..90d81ed 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -1,24 +1,12 @@
-# [.github/workflows/CI.yml]
 name: CI
+
 on:
   push:
     branches:
       - main
     tags: '*'
   pull_request:
+    
 jobs:
   call:
-    strategy:
-      matrix:
-        version:
-          - '1.10'
-          - '1.11'
-        os:
-          - ubuntu-latest
-        arch:
-          - x64
     uses: control-toolbox/CTActions/.github/workflows/ci.yml@main
-    with:
-      version: ${{ matrix.version }}
-      os: ${{ matrix.os }}
-      arch: ${{ matrix.arch }}
diff --git a/docs/src/ho.md b/docs/src/ho.md
index ccc40dd..822787a 100644
--- a/docs/src/ho.md
+++ b/docs/src/ho.md
@@ -8,7 +8,7 @@
         \dot{x}_2(t) = u(t)-x_1(t), t\in [0,T]  \\[0.5em]
         u(t) \in [-1, 1], \; t\in [0,T]\\[0.5em]
         x(0) = (4.2,0) , \quad x(T) = 0_{\mathrm{R}^2}, \\[0.5em]
-        \{x \mid x_2 < 0\} \text{ is a control loss reigon.}
+        \{x \mid x_2 < 0\} \text{ is a control loss region.}
     \end{array}
     \right.
 ```
@@ -343,7 +343,7 @@ animx = @animate for i = 1:length(tt0)
 end
 
 animu = @animate for i = 1:length(tt0)
-    plot(tt0[1:i], uu[1:i], xlim=(0.,tt0[end]), ylim=(-1.2,1.2), label="opitmal control",
+    plot(tt0[1:i], uu[1:i], xlim=(0.,tt0[end]), ylim=(-1.2,1.2), label="optimal control",
         linecolor=:red, linewidth=2)
 end 
 
diff --git a/docs/src/zermelo1.md b/docs/src/zermelo1.md
index df561c3..6f983f8 100644
--- a/docs/src/zermelo1.md
+++ b/docs/src/zermelo1.md
@@ -302,7 +302,7 @@ animx = @animate for i = 1:length(tsol)
 end
 
 animu = @animate for i = 1:length(tsol)
-    plot(tsol[1:i], usol[1:i], xlim=(0.,8.), ylim=(-pi/2,pi/2), label="opitmal control", 
+    plot(tsol[1:i], usol[1:i], xlim=(0.,8.), ylim=(-pi/2,pi/2), label="optimal control", 
         linecolor=:red, linewidth=2)
 end 
 
diff --git a/docs/src/zermelo2.md b/docs/src/zermelo2.md
index b5de41f..8a35ce5 100644
--- a/docs/src/zermelo2.md
+++ b/docs/src/zermelo2.md
@@ -377,7 +377,7 @@ animy = @animate for i = 1:length(ttt)
 end
 
 animv = @animate for i = 1:length(ttt)
-    plot(ttt[1:i], vvv[1:i], xlim=(0.,8.), ylim=(-pi/2,pi/2), label="opitmal control", 
+    plot(ttt[1:i], vvv[1:i], xlim=(0.,8.), ylim=(-pi/2,pi/2), label="optimal control", 
         linecolor=:red, linewidth=2)
 end