It's absolutely not a redaction procedure. Redaction is only the removal of sensitive information.
It so happens Acrobat currently does this in two steps, highlight first, then remove, but that's just for convenience. I wouldn't be the least bit surprised to find that if you upgraded your Acrobat in the future either the highlighting would vanish or the text would!
Test screen name: It is a redaction procedure, please, consult the meaning of "redact" in your english dictionary. I suggest you the Merrian Webster dictionary and I give you the correct definition of the word as follows: 1: to put in writing 2: to select or adapt (as by obscuring or removing sensitive information) for publication or release; broadly : edit 3: to obscure or remove (text) from a document prior to publication or release. Origin of REDACT: Middle English, from Latin redactus, past participle of redigere - First Known Use: 15th century
The term redact can be used in both senses (removing or adding information). Newspapers redactions are about writing articles. The definition of this word it's not important for me, I am searching for a solution about this. Thanks.
George Johnson: The problem is I am not programmer and even if I have the sample code... I wouldn't know what to do with it... so I was asking for something ready about this to allow to highlight words taken from a dictionary in multiple PDF files
I'm not aware of any freely available code that does just what you want, sorry.