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The Special Properties menu lets you add or remove three other useful text
properties: read-only
, invisible
and intangible
.
The intangible
property disallows moving point within the text,
the invisible
text property hides text from display, and the
read-only
property disallows alteration of the text.
Each of these special properties has a menu item to add it to the region. The last menu item, ‘Remove Special’, removes all of these special properties from the text in the region.
Currently, the invisible
and intangible
properties are
not saved in the text/enriched format. The read-only
property is saved, but it is not a standard part of the text/enriched
format, so other editors may not respect it.