Solid

Show the SFM tag hierarchy in the top-left pane. (Or if that's too bug-prone, a read-only pop-up windows displaying it would be great too.) This is a long-standing request that will really make a big difference in how quickly new users come up to speed in understanding SOLID. (Yes, I realize that the tree will appear redundant, but that's a good thing. It's good to see all the possible levels at which a tag is allowed to show up--then you know that every other level is illegal for that tag. Clicking a tag in the tree could cause all of its locations to be highlighted--just like highlighting a common word in a file in Notepad++ instantly highlights them all.)