Set the command character to x and the character generating a literal command character (by triggering the
metacommand) to y (similar to the ‘-e’ option). Each argument is either a single character, a two-character sequence of the form ‘^x’ (meaning C-x), a backslash followed by an octal number (specifying the ASCII code of the character), or a backslash followed by a second character, such as ‘\^’ or ‘\\’. The default is ‘^Aa’, but ‘``’ is recommended by one of the authors.
Set the default command characters. This is equivalent to the command
escapeexcept that it is useful for multiuser sessions only. In a multiuser session
escapechanges the command character of the calling user, where
defescapechanges the default command characters for users that will be added later.
Send the command character (C-a) to the process in the current window. The keystroke for this command is the second parameter to the ‘-e’ command line switch (see Invoking Screen), or the