diff --git a/docs/reference/control/wait-micros.md b/docs/reference/control/wait-micros.md
index 9e2a0ad3..49392452 100644
--- a/docs/reference/control/wait-micros.md
+++ b/docs/reference/control/wait-micros.md
@@ -2,16 +2,16 @@
 
 ## Example #example
 
-Use the a wait and the timer to generate a crazy number.
+Use a wait and the timer to generate a number.
 
 ```blocks
-let crazy = 0
+let something = 0
 for (let i = 0; i < 100; i++) {
     control.waitMicros(100)
-    crazy = control.millis()
-    crazy += control.deviceSerialNumber()
-    if (crazy != 0) {
-        crazy = crazy / 1000000
+    something = control.millis()
+    something += control.deviceSerialNumber()
+    if (something != 0) {
+        something = something / 1000000
     }
 }
 ```
\ No newline at end of file
diff --git a/sim/state/motornode.ts b/sim/state/motornode.ts
index 6cc34bb7..eb026dd8 100644
--- a/sim/state/motornode.ts
+++ b/sim/state/motornode.ts
@@ -37,7 +37,7 @@ namespace pxsim {
             return Math.round(this.angle);
         }
 
-        // returns the slave motor if any
+        // returns the secondary motor if any
         getSynchedMotor() {
             return this._synchedMotor;
         }