Dear friends FYI: When working on "Customising FrameMaker 12/13" I was not succesful with keyboard shortcuts for a scipt.
In the meantime I discovered Russ Wards post on this forum and his script 100.02__ADVANCED_Create_formatting_shortcuts. So I found the reason why my shortcuts did not work: For ESC sequences the backslash must be escaped! Then I missed the key-label in the menu. I discovered that the menu entry can be appended by a tab and the label:
Rick Quatro observed in the mentioned forum post that his CTRL + comma (^,) shortcut does not work. He argued that certain key combinations will not work: "I got some of the letter keys to work, but I couldn't use the punctuation keys. FrameScript still rules :-)".
I will update "Customising FrameMaker 12/13" accordingly…