After years of using Sib I only just discovered that if you have a chord, i.e. several noteheads on the same note stem, and you double-click one of the notes then all the notes in the chord get selected. Having discovered this, I looked for it in the documentation, and it is mentioned, but as part of the key-assignment table which is why I hadn't known the feature existed. I hadn't read the documentation carefully enough. Since then I've been through the table a line at a time to see if there were any other useful features I didn't know about. Apologies if you knew about this feature already, but I thought you'd be pleased to learn about it if you didn't already know it. Any other unsung features of Sib that deserve to be more widely known?