diff --git a/episodes/Snakemake.md b/episodes/Snakemake.md
index 6120e9a..d1c8cae 100644
--- a/episodes/Snakemake.md
+++ b/episodes/Snakemake.md
@@ -125,7 +125,7 @@ rule analyze_data:
 * Rules:
   * **rule simulate_data**: This rule simulates data for each sample. As it has no input dependencies, it can be executed at the beginning of the pipeline.
   * **rule analyze_data**: This rule analyzes the simulated data for each sample. It depends on the output of the `simulate_data` rule, ensuring that this rule only proceeds after `simulate_data` is complete.
-  * **rule all**: This **mandatory** rule specifies the final goal of the workflow. By defining the desired output, Snakemake automatically determines the necessary steps and their execution order. This rule also allows for the use of `wildcards`, which enable flexible and scalable workflows.
+  * **rule all**: A rule without an output will **always** run, and therefore it is one of the possible ways to define the final goal of the workflow. (`rule all` is the common rule name of the final output) By defining the desired output, Snakemake automatically determines the necessary steps and their execution order. This rule also allows for the use of `wildcards`, which enable flexible and scalable workflows.
 
 * Parallelism: Snakemake automatically parallelizes the analyze_data rule for each sample, as they are independent of each other.
 
diff --git a/episodes/introduction.md b/episodes/introduction.md
index 6f30873..bde35fb 100644
--- a/episodes/introduction.md
+++ b/episodes/introduction.md
@@ -89,7 +89,7 @@ By implementing these steps, we can significantly improve the reproducibility, m
 
 ## A quick remark on LAW
 
-While some analysts utilize the Luigi Analysis Workflow (LAW) ([https://github.com/riga/law]), a workflow orchestration tool built on top of Spotify's Luigi ([https://github.com/spotify/luigi]) and developed by a CMS physicist, this tutorial focuses on Snakemake. Both LAW and Snakemake are excellent tools, and if you're already using LAW for your workflow management, that's great!
+While some analysts utilize the Luigi Analysis Workflow (LAW)[https://github.com/riga/law], a workflow orchestration tool built on top of Spotify's (Luigi)[https://github.com/spotify/luigi] and developed by a CMS physicist, this tutorial focuses on Snakemake. Both LAW and Snakemake are excellent tools, and if you're already using LAW for your workflow management, that's great!
 
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