30.12.1 Requesting to Edit Formatted Text
Whenever you visit a file that Emacs saved in the text/enriched
format, Emacs automatically converts the formatting information in the
file into Emacs's own internal format (known as text
properties), and turns on Enriched mode.
To create a new file of formatted text, first visit the nonexistent
file, then type M-x enriched-mode before you start inserting text.
This command turns on Enriched mode. Do this before you begin inserting
text, to ensure that the text you insert is handled properly.
More generally, the command
enriched-mode turns Enriched mode
on if it was off, and off if it was on. With a prefix argument, this
command turns Enriched mode on if the argument is positive, and turns
the mode off otherwise.
When you save a buffer while Enriched mode is enabled in it, Emacs
automatically converts the text to text/enriched format while writing it
into the file. When you visit the file again, Emacs will automatically
recognize the format, reconvert the text, and turn on Enriched mode
You can add annotations for saving additional text properties, which
Emacs normally does not save, by adding to
Note that the text/enriched standard requires any non-standard
annotations to have names starting with ‘x-’, as in
‘x-read-only’. This ensures that they will not conflict with
standard annotations that may be added later.
See Text Properties,
for more information about text properties.