Glossary

Call - Trigger some code to run, providing zero or more parameters
Invoke - To cause some code to be triggered, by any method
Library - A collection of code written by you or another user that you can use to expand AutoHotkey's functionality

Syntax

Parentheses - () - Used to call code with zero or more arguments, or to group together parts of an expression to change operator precedence
- For example, MsgBox( 2 * (2+2) )
Brackets - [] - Used to access Items from an object's Item Store, or declare an array literal
Braces - {} - Used to group together a logical "block" of code, or declare a basic object literal
Angle Brackets - <> - Most often used as Greater Than or Less Than operators, sometimes used when defining Arrow Functions
Hotkey - A block of code that runs when a key is pressed
Function - A reusable block of code, usually named, that can take zero or more parameters and optionally returns a value
Built-In Function - A function provided by AutoHotkey itself, like MsgBox or Send
Command - A function call statement; a top-level function call where the parentheses around parameters are optional
- For example, MsgBox "This is the first parameter""
Object - A value that contains sub-values in a property store, and optionally in an item store
- For example, var1 := { prop1: "Value1", prop2: "Value2"}
Array - An object with an item store that stores values numerically indexed counting up from 1
- For example, var1 := ["Value1", "Value2", "Value3"] / var2 := var1[2]
Map - An object with an item store that stores values referenced by strings called keys
- For example, var1 := Map("Key1", "Value1", "Key2", "Value2") / var2 := var1["Key2"]

Property: A name saved in an object's property store, accessed using dot syntax
Property Store: The collection of all the properties available on an object
Item: A name saved in an object's item store, accessed using bracket syntax
Item Store: The collection of all the items available on an object
Method: A property that can be called
Dynamic Property: A property whose value is computed at check time by a function
Member: Used interchangeably with Property
Field: Sometimes used to refer to object properties, but more commonly used to refer to members of a DLL structure
Instance: A copy of a class that inherits its methods but has its own properties that can be set independently
Prototype: An object used as the base for instance objects
Base: For a given object instance, the prototype that methods are inherited from