<form action="/retrievecourses.php">
  <label for="matricno">Student Matricno:</label><br>
  <input type="text" id="matricno" name="matricno" value="18000000"><br>
  <label for="level">Level:</label><br>
  <input type="text" id="level" name="level" value="ND"><br><br>
  <input type="submit" value="Submit">
</form>