Thanks Graham, that worked, I can now move the divider bar between the Burst Pair and Coding columns. I think it might be useful if you could also grab one of the bars between the Set Burst Codes box and the Timing Summary box. I don't need it right now, so absolutely no rush if you decide to do that, I think we're just spoiled and we're used to being able to re-size everything.
Here's something else I've noticed when playing around with re-sizing the screen, when you're in the Learned Signals tab of RMIR, if you make the screen too small, the buttons at the bottom start disappearing (from the right). Whereas I think it would be better if they wrapped around instead. I know I have been puzzled on occasion wondering where the Timing Summary button is, then I'll remember that I have to make the screen bigger to see it. The Devices, Protocols, Macros, Fav/Scan and Special Protocols tabs also drop the buttons.
Checking the Activities tab, I see these buttons do wrap around but the bar at the bottom of the screen stays the same size, so you can't really reach the Move Right button when it wraps. The bar should get deeper when the buttons wrap.
The Favorites tab is more interesting, most of the buttons wrap nicely here, except when the screen is small enough for the Icon button to wrap it drops behind the New button and is pretty much blocked, I don't see a way to scroll to get to it. The buttons on the General tab do wrap but they end up being blocked by the User Notes section.
Switching over to the pop-up RM (ie, editing a device upgrade from RMIR), the lowest row of buttons disappear off to the right as the screen shrinks, this is true for all tabs. On the Functions tab, the next row of buttons upwards do wrap but end up blocked by the lower row of buttons. In External Functions and Layout, the 2nd row disappears. In Buttons, they wrap and get blocked.
In the stand alone version of RM, obviously there is no lower line of buttons, but the next line of buttons behaves the same as above.