Graph: pan with left or right, open with the other

README.md

@@ -302,10 +302,10 @@ the current directory, as dots like Obsidian's graph: directories in the
 heading colours by depth (purple, blue, green, ...), files white, each
 joined to its parent directory and to the files that reference it (Markdown
 links and images, `[[wiki links]]` and portals). Hover a dot to light up its
-links, click it to open it, scroll to zoom. Settings > Graph picks the mouse
-button that pans (Middle by default) and can hide directories, leaving only
-files and the links between them. In the client, Flet can't follow a held
-middle button, so Middle there is click to grab, move, click to let go.
+links, scroll to zoom. One mouse button pans and the other opens the dot
+you click: right-drag pans and left-click opens by default, or the other way
+round in Settings > Graph, which can also hide directories, leaving only
+files and the links between them.
 
 Rename takes a `/` to move, like the web view (`../Archive/Notes.md`).
 Shortcuts: Enter opens, Backspace goes up, F2 renames, Delete deletes,