Changes to Cooperative Threading between r4 and r5

'''Cooperative Threading'''

This threading model is sometimes called "[fibers]". It is the threading model where each thread must ''explicitly'' give up control of the process or CPU to allow other [threads] to run. --> This [threading model] is sometimes called "[fibers]". It is the [threading model] where each thread must ''explicitly'' give up control of the process or CPU to allow other [threads] to run.

Compare to [Preemptive Threading]

Legend

     Only in r4
     Only in r5
     -->      Modified slightly between r4 and r5