Write greek characters.

MathWriter.ahk

#NoEnv  ; Recommended for performance and compatibility with future AutoHotkey releases.
#Warn  ; Recommended for catching common errors.
SendMode Input  ; Recommended for new scripts due to its superior speed and reliability.
SetWorkingDir %A_ScriptDir%  ; Ensures a consistent starting directory.

::sigma::Σ
::pi::π
::lambda::λ
::theta::θ
::delta::Δ
::beta::β
::alpha::α
::omega::ω
::phi::φ
::tau::τ
::mu::μ