this is from the dev wiki
Basic Instructions
All functions of the developer exe are accessed through keyboard key combinations. There are two control menus: CTRL+SHIFT+. (period), and CTRL+SHIFT+M. All submenu keys are case specific, so turn off caps lock if it is on. To return to a previous Menu press ,(Comma), used on the root menus this will also close the Control Menu display.
CTRL+SHIFT+M
This is a minor menu, it has a few specific functions, but is limited, inexplicit and of little use. TO BE EXPANDED
CTRL+SHIFT+.
This is the primary control menu, almost all of the functions of the Dev.exe are accessed through it.
harpo