I am affraid you can't resize
Solution is hide Browser and use the full screen in Toggle mode
Create a Folder " scripts" inside the Moi Folder
Put the file linked (unzip it ! )
And create a Short Cut for example F11 and write FullScreen.js on the column 2
Have fun modeling!


or use English or better the French UI (Small words inside) ;)

PS @ MIchael : the full screen don't hide the Browser button so some space lost!