Some panels can be toggled on/off from menu entries. Others can not. Have all toggle

In Notepad ++ there are a number of panels supplementing the editor itself. All can be opened by selecting in the menu. Some can be closed again from the menu

• Project as Workspace
• Document Map
• Function List.

Others can only be closed by closing the panel directly

• Character Panel
• Clipboard History
• Project Panel (1, 2, 3)
• Search Results

This seems inconsistent. I think that all panels should toggle on/off. I say this because we can have multiple panels in a stack docked to the side or bottom of N++. If you close a docked panel, you close the entire stack.

I would rather not close an entire stack just to close a single panel. I also would rather not drag a panel off the stack to close it. It seems the best way is having the menu entry (or toolbar entry or shortcut) toggle the panel