R2009b was the last hurrah for the classic "docked" interface before the radical shift to the Ribbon-style layout (which came in R2012b). If you open R2009b today, you are greeted with that beige/grey default color scheme.
Formerly the "Current Directory Browser," it was overhauled to show a hierarchy of files and added a powerful search bar to scan subfolders. R2009b was the last hurrah for the classic
For the first time, users could bind custom key combinations to frequent actions like cutting, copying, or launching specific reports. or launching specific reports. Interestingly
Interestingly, running the 2009b ISO on modern Windows 10/11 (in compatibility mode) yields surprising results: Windows Vista (SP1 or later)
Officially supports Windows 7, Windows Vista (SP1 or later), and Windows XP (SP2 or SP3).