diff --git a/docs/UserGuide.md b/docs/UserGuide.md
index 1cd18fbafa5..6eb2f3ac563 100644
--- a/docs/UserGuide.md
+++ b/docs/UserGuide.md
@@ -103,7 +103,7 @@ Examples:
 * `addstu n/John Doe p/98765432 e/johnd@example.com nn/e1234567 a/John street, block 123, #01-01`
 * `add n/Betsy nn/e01234567 Crowe t/friend e/betsycrowe@example.com a/Newgate Prison p/1234567 t/criminal`
 
-### Listing all persons : `list`
+### Listing all students : `list`
 
 Shows a list of all persons in the address book.
 
@@ -128,7 +128,7 @@ Examples:
 *  `edit 1 p/91234567 e/johndoe@example.com` Edits the phone number and email address of the 1st person to be `91234567` and `johndoe@example.com` respectively.
 *  `edit 2 n/Betsy Crower t/` Edits the name of the 2nd person to be `Betsy Crower` and clears all existing tags.
 
-### Locating persons by name: `find`
+### Locating students by name: `find`
 
 Finds persons whose names contain any of the given keywords.
 
@@ -146,7 +146,17 @@ Examples:
 * `find alex david` returns `Alex Yeoh`, `David Li`<br>
   ![result for 'find alex david'](images/findAlexDavidResult.png)
 
-### Deleting a person : `delete`
+
+### Marking a student's attendance for a given week by their NUSNet: `mark`
+
+Marks a student's attendance for a particular week.
+
+Format: `mark nn/NUSNET_ID wk/WEEK_NUMBER`
+
+Example:
+* `mark nn/e1234567 wk/3`
+
+### Deleting a student : `delete`
 
 Deletes the specified person from the address book.