diff --git a/Workflow-management.md b/Workflow-management.md
index 415ae5c..1e573f3 100644
--- a/Workflow-management.md
+++ b/Workflow-management.md
@@ -123,7 +123,7 @@ re-run the last step.
 The rule syntax is rather straight-forward: each rule has a list of inputs and
 outputs (which are numbered from `0` to `N` by default, and can be named). The
 `shell` directive specifies that we want to run a shell command. This is the
-most flexible option. Alternatively one can use the `run` directive and write
+most flexible option. Alternatively, one can use the `run` directive and write
 inline python code directly in the `Snakefile`, the `script` directive, which
 specifies the name of a Python (or another language)
 [script](https://snakemake.readthedocs.io/en/stable/snakefiles/rules.html#external-scripts)
@@ -131,7 +131,7 @@ to be run (Snakemake creates a context for this script which allows it to access
 the input and output objects), or finally the [`notebook`
 directive](https://snakemake.readthedocs.io/en/stable/snakefiles/rules.html#jupyter-notebook-integration),
 similar to the `script` directive, for which Snakemake allows interactive
-execution (useful for postprocessing/data exploration).
+execution (useful for post-processing/data exploration).
 
 Reading the
 [documentation](https://snakemake.readthedocs.io/en/stable/index.html) is highly
@@ -165,7 +165,7 @@ Here is a list of useful features:
 Make is a program specifically designed to be a build system, i.e. a tool that
 coordinates the compilation of a program's source code so that an executable or
 library can be built. Each file of the build process is called a *target* and is
-the output of some rule. Although it's primary purpose is creating build files,
+the output of some rule. Although its primary purpose is creating build files,
 it can easily be made to manage outputs of simulations. While it has the
 advantage of being installed on virtually every Linux machine used for
 scientific work, it lacks some features (most notably integration with queue
@@ -188,4 +188,12 @@ sorted_groups.txt only_users.txt &: groups_with_users.txt
 # Rule with pattern
 start_with_letter_%.txt: groups_with_users.txt
         grep '^$*' < $< > $@
-```
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+```
+
+Here are [documentation](https://www.gnu.org/software/make/manual/html_node/index.html) pages for interesting features used in the example:
+
+- [Rule syntax](https://www.gnu.org/software/make/manual/html_node/Rule-Syntax.html)
+- [Wildcards](https://www.gnu.org/software/make/manual/html_node/Wildcards.html) are semantically different from wildcards in Snakemake
+- [Pattern rules](https://www.gnu.org/software/make/manual/html_node/Pattern-Intro.html) correspond to wildcards in Snakemake
+- [Automatic variables](https://www.gnu.org/software/make/manual/html_node/Automatic-Variables.html) correspond to the symbols `$@`, `$<` and `$*` in the example
+- [Grouped targets](https://www.gnu.org/software/make/manual/html_node/Multiple-Targets.html)
\ No newline at end of file