Final answer:
In programming, a set of functions or commands with a shared purpose is known as a library or module, which can be used to perform specific tasks in a program, including turtle manipulation in Turtle Graphics.
Step-by-step explanation:
A collection of commands / functions, typically with a shared purpose, such as a group of functions for manipulating the turtle, is called a library or module. In programming, a library is a set of precompiled routines that a program can use. These routines usually serve a specific purpose and can be linked to your program to perform tasks such as input/output operations, mathematical computations, or in this case, manipulating the turtle in a programming environment such as Python's Turtle Graphics.