A read-only text area:
The readonly attribute is supported in all major browsers.
The readonly attribute is a boolean attribute.
When present, it specifies that a text area should be read-only.
In a read-only text area, the content cannot be changed, but a user can tab to it, highlight it and copy content from it.
In XHTML, attribute minimization is forbidden, and the readonly attribute must be defined as <textarea readonly="readonly">.
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