In WSedit, the "Wordstar" keymapping cannot be changed. In the other editors (Hypermake, ME, Textbuch), you can also select the keycodes "CUA" and "Mixed". "CUA" does not know Ctrl-commands with two character keys and the commands are close to other Windows editors - although there are no clear default standards. When selecting "CUA", some functionality of the editor is no more in reach.
When selecting "Mixed", the single-character Ctrl commands are like "CUA", nevertheless you have got access to the double-character "Wordstar" Ctrl commands.
Ctrl is abbreviated with ^ in this documentation.