My newest PTE uses data to store pen strokes and uses trigonometric functions to create, if not bezier, then circular curves. It supports ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789:"?.,!-_ My first PTE was called M5PenText, and it used only straight lines and if loops. My second was called Q-Script, and it was my first shared project on this account. My third was called Z-Script, and it used data and diagonals. Now, my newest one has curved letters and up/down centering. Next year's should have caps sensing :)
