Update _docs/tutorials/core/programming_rcl_rclc/index.md

JanStaschulat · ralph-lange · web-flow · commit 6bba6775d056 · 2020-06-02T10:36:22.000Z
Co-authored-by: Ralph Lange &lt;ralph-lange@users.noreply.github.com&gt;
diff --git a/_docs/tutorials/core/programming_rcl_rclc/index.md b/_docs/tutorials/core/programming_rcl_rclc/index.md
@@ -385,7 +385,7 @@ if (rc != RCL_RET_OK) {
   printf("Error in rclc_executor_add_timer.\n");
 }
 ```
-A key feature of the rclc-Executor is, that the order of these `rclc-executor-add-* `-functions matters. The order in which these functions are called, defines the static processing order of the callbacks when the spin-function of the executor is running.
+A key feature of the rclc Executor is that the order of these `rclc-executor-add-* `-functions matters. The order in which these functions are called defines the static processing order of the callbacks when the spin-function of the executor is running.
 
 In this example, the timer was added to the executor before the subscription. Therefore, if the timer is ready and also a new message for the subscription is available, then the timer is executed first and after it the subscription. Such a behavior cannot be defined currently with the rclcpp Executor and is useful to implement a deterministic execution semantics.
 

Original file line number	Diff line number	Diff line change
`@@ -385,7 +385,7 @@ if (rc != RCL_RET_OK) {`
`385`	`385`	`printf("Error in rclc_executor_add_timer.\n");`
`386`	`386`	`}`
`387`	`387`	```
`388`		-A key feature of the rclc-Executor is, that the order of these `rclc-executor-add-* `-functions matters. The order in which these functions are called, defines the static processing order of the callbacks when the spin-function of the executor is running.
	`388`	+A key feature of the rclc Executor is that the order of these `rclc-executor-add-* `-functions matters. The order in which these functions are called defines the static processing order of the callbacks when the spin-function of the executor is running.
`389`	`389`
`390`	`390`	`In this example, the timer was added to the executor before the subscription. Therefore, if the timer is ready and also a new message for the subscription is available, then the timer is executed first and after it the subscription. Such a behavior cannot be defined currently with the rclcpp Executor and is useful to implement a deterministic execution semantics.`
`391`	`391`