Computer Coordinate System

In a 2-D coordinate system the X axis generally points from left to right, and the Y axis generally points from bottom to top.


Conditionals are features of a programming language, which perform different computations or actions depending on whether a programmer-specified boolean condition evaluates to true or false. These are also known as "If" statements.


Events are actions that control what happens in a program such as user actions, mouse clicks, key presses, sensor outputs, or messages from other programs/threads.


A Function is a type of procedure or routine which returns a value.

Functions and Parameters

The term parameter is often used to refer to the variable as found in the function definition, while argument refers to the actual input passed.


A Loop is a sequence of instruction s that is continually repeated until a certain condition is reached. Such as getting a variable and changing it until a integer has reached a prescribed variable.


An Object refers to a particular instance of a class which can be a combination of variables, functions, and data structures.