<Li> The freedom to study how the program works, and change it so it does your computing as you wish (freedom 1). Access to the source code is a precondition for this . </Li> <Li> The freedom to redistribute copies so you can help your neighbor (freedom 2). </Li> <Li> The freedom to distribute copies of your modified versions to others (freedom 3). By doing this you can give the whole community a chance to benefit from your changes . Access to the source code is a precondition for this . </Li> <P> Freedoms 1 and 3 require source code to be available because studying and modifying software without its source code is highly impractical . </P>

Explain the four types of freedom encouraged by fsf