The above text snippets all provide instructions on how to create an abbreviation index in Word. The process involves marking abbreviations in the text and then inserting the index. Alternately, one can create the index manually. This can be done in both Word and LibreOffice. There are two options for creating an abbreviation index in a paper: either manually or through a software program. To mark an abbreviation, the key combination [Alt]+[Shift]+[X] can be used. The steps can be summarized as follows: 1) Mark abbreviations in the text as an index in Word. 2) Insert the abbreviation index in Word. 3) Alternatively, create the index manually. 4) This can be done in both Word and LibreOffice. 5) Two options for creating an abbreviation index: manually or through a software program. 6) To mark an abbreviation, use the key combination [Alt]+[Shift]+[X].