diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7887148..a03f313 100755
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,8 @@
 
 * New json_encode command #124
 * New json_parse command #124
+* Module level documentation #125
+* test_file command is now documented and public.
 
 ### v0.6.3 (2020-07-24)
 
diff --git a/duckscript_sdk/src/sdk/std/test/test_directory/mod.rs b/duckscript_sdk/src/sdk/std/test/test_directory/mod.rs
index 1dfb80c..00c1ff0 100755
--- a/duckscript_sdk/src/sdk/std/test/test_directory/mod.rs
+++ b/duckscript_sdk/src/sdk/std/test/test_directory/mod.rs
@@ -77,7 +77,7 @@ impl Command for CommandImpl {
 
                     let test_script = format!(
                         r#"
-result = std::test::TestFile {} {}
+result = test_file {} {}
 assert result
 "#,
                         &file, &test_name
diff --git a/duckscript_sdk/src/sdk/std/test/test_file/help.md b/duckscript_sdk/src/sdk/std/test/test_file/help.md
new file mode 100644
index 0000000..43d5c6e
--- /dev/null
+++ b/duckscript_sdk/src/sdk/std/test/test_file/help.md
@@ -0,0 +1,33 @@
+```sh
+test_file file [test name]
+```
+
+This command can be used to run unit tests written in duckscript.<br>
+It will run all test functions that start with **test_** in the given file.<br>
+Each such function is considered as a test and can run any type of code and check itself using assert commands.
+
+#### Parameters
+
+* The file name containing the test functions.
+* Optional pattern for the test function to limit invocation of only those tests.
+
+#### Return Value
+
+**true** if successful.
+
+#### Examples
+
+This is an example of a test function:
+
+```sh
+function test_set_get_unset
+    unset_env TEST_SET_GET_UNSET
+    value = get_env TEST_SET_GET_UNSET
+    assert_false ${value}
+
+    value = set_env TEST_SET_GET_UNSET "test value"
+    assert ${value}
+    value = get_env TEST_SET_GET_UNSET
+    assert_eq ${value} "test value"
+end
+```
diff --git a/duckscript_sdk/src/sdk/std/test/test_file/mod.rs b/duckscript_sdk/src/sdk/std/test/test_file/mod.rs
index 179a5cb..9166ce2 100755
--- a/duckscript_sdk/src/sdk/std/test/test_file/mod.rs
+++ b/duckscript_sdk/src/sdk/std/test/test_file/mod.rs
@@ -30,8 +30,12 @@ impl Command for CommandImpl {
         pckg::concat(&self.package, "TestFile")
     }
 
+    fn aliases(&self) -> Vec<String> {
+        vec!["test_file".to_string()]
+    }
+
     fn help(&self) -> String {
-        "".to_string()
+        include_str!("help.md").to_string()
     }
 
     fn clone_and_box(&self) -> Box<dyn Command> {