In some cases it is beneficial to be able to compare two different phases of a project at once. Usually this would require a lot of clicking back and forth. A simple trick is to hold the CTRL key and right click a phase tab to pop it out of the project view.
Note: This is only for display purposes. This does not actually disassociate phases from the project. It merely pops them out for different viewing options. After closing the window, the phase tab is popped back into place in the main Project Editor window.
After performing a CTRL-Right click:
This is especially useful if you have multiple monitors. One phase can be displayed on each monitor for quick comparison.