I got annoyed with always needing to think so hard about the mapping between the names I know courses by, and the CRNs or 4-digit course numbers scholar shows them as. It's rather annoying when you're really busy getting work done and that poor UI design breaks your flow.
To rename a tab, just right click it and select Edit Scholar Tab Name.
To reset the tab back to its original name, just set it to an empty name.
scholar-128.png is derived from this file from Scholar itself.
pencil-16.png is from Mark James' iconic silk icon set, used under the Creative Commons Attribution License.