Unlike modern phonetic or "Tamil 99" layouts that are often built into Windows or macOS, MCL Mangai typically follows a or Bamini style mapping. In these layouts, keys do not correspond to the sound of the letter (phonetics) but rather to the physical position of characters on traditional Tamil typewriters.
Uppercase keys are frequently used to access aspirated sounds, specific dots (pulli), or less common characters. How to Use the MCL Mangai Font mcl mangai font keyboard layout
These are often distributed across the middle and bottom rows. Unlike modern phonetic or "Tamil 99" layouts that
தமிழ்நாடு அரசு விைசப்பலைக - Tamil Virtual Academy specific dots (pulli)