R does not utilizes/consumes/responsible for memory Management.
R gives everything to system to perform the Memory Management.
To check the Memory-limits in R.
To find the size of an Object 'x'
To find the size of all the objects created.
You can free up the space allocated to a variable by using
Command: rm (x) x- variable
All this activity is in respect to byte storage and memory limit and how you can use it effectively with the system.