What are some of the different launch modes in Android?

"The three main launch modes Android applications use include Standard, SingleTopic, and SingleTask. Standard will generate a new instance of an activity in the original task. This allows me to create several instances of the same activity. SingleTopic is similar to Standard except if the application recognizes the previous instance of an activity, a new instance will not be created. Instead, the intent called by the activity will be passed to the 'onNewIntent' method. The final launch mode, SingleTask, pushes a new instance to the task as the root. For example, if the current stack of activities is A then B then C then D, and activity B is relaunched, SingleTask will create a launch mode leaving A and B and eliminating C and D."