<aside> 🛠 A self contained unit of code that performs a clear-defined task. A module typically contains the variables and subroutines necessary to its task

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ADVANTAGES

• Modules can be re-used
• Modules can be tested separately
• Simultaneous development - different devs can be assigned different modules
• Devs can be assigned modules that match with their skillsets
• Contain fewer bugs than the overall program

Standard function - a pre-written subroutine that performs a commonly-required task, such as calculating the square root of a number

Standard module - a group of related standard functions, as well as their associated variables

User-defined subprogram - Like a standard module, but written by the user for later user. A standard module can be written once and used many times, reducing the number of lines of code