Roblox uses (an anti-tamper system). While not invincible, it is extremely good at detecting injection. If you run a Speed Draw script:

A Speed Draw script is a piece of code (usually in Lua) that interfaces with the game’s drawing canvas. Instead of you manually clicking and dragging your mouse, the script takes a pre-loaded image or a set of coordinates and "injects" the brushstrokes directly into the game. Why Users Search for "Extra Quality"

While these scripts can produce impressive art, they are controversial within the Roblox community: In games like Speed Draw

High-quality scripts, often labeled as "extra quality" or "premium," generally offer advanced rendering capabilities beyond simple lines:

: If you're familiar with programming, take a look at the script's code. Be wary of scripts that ask for sensitive information or have obfuscated code.