Terra is a high-performance programming language designed for creating efficient and optimized applications. It was created by the Computer Graphics Lab at New York University, and is particularly well-suited for use in graphics-intensive applications, such as video games and simulations. This guide will provide an introduction to Terra, including its history, how to write Terra code with an example, and what are the best applications for it.

History of Terra:
Terra was initially developed by the Computer Graphics Lab at New York University. Its design was heavily influenced by Lua, a lightweight scripting language, but it was developed with a focus on performance and efficiency. The creators of Terra wanted to create a language that combined the flexibility and ease of use of a scripting language with the performance of a compiled language.

How to Write Terra Code:
Terra code is written using Lua syntax. Terra can be used as an embedded language, allowing it to be used in conjunction with other languages such as C and C++. To write Terra code, you need to have the Terra compiler installed on your computer.

Here is an example of a simple Terra program that prints "Hello, World!" to the console:

```
function main()
  print("Hello, World!")
end
```

This program defines a function called `main` that simply prints the string "Hello, World!" to the console. To run this program, you would save it to a file with a .t extension (e.g. hello.t) and then compile it using the Terra compiler. The resulting executable can then be run like any other program.

Best Applications for Terra:
Terra is particularly well-suited for use in graphics-intensive applications such as video games and simulations. Its performance and efficiency make it ideal for creating complex, real-time applications that require a lot of processing power. Terra's ability to be used as an embedded language also makes it a good choice for extending the functionality of other languages.

Conclusion:
Terra is a powerful and efficient programming language that is well-suited for creating high-performance applications. While it may not be as well-known as some other programming languages, it is gaining popularity in the gaming and simulation industries. With its flexibility and ease of use, Terra is a language that should be considered by anyone looking to create complex, graphics-intensive applications.