Using PrevNext accurately

[Elemi]

1.5.7c, quite a few plug ins :-)

Anne from PicaflorAzul has uploaded version 2.1 of the Westminster New template and it includes some changes to the PREVNEXT_TITLE and PREVNEXT_BUTTON by including FIRST and LAST in /includes/languages/westminster_new/english.php

However, she hasn't upgraded her other files that hold the same codes as PREVNEXT being:
/admin/includes/classes/Paginator.php,
/admin/includes/classes/split_page_results.php,
/admin/includes/languages/english.php
/includes/classes/split_page_results.php
/includes/languages/english/westminster_new/button_names.php

How easy is it to adjust these files without screwing up the syntax?

And I've tried the buttons one, however it just doesn't feel right so please point me in the right direction

Line # 57 : define('PREVNEXT_BUTTON_FIRST', '[FIRST >>]');

Line # 58 : define('PREVNEXT_BUTTON_PREV', '[Prev>>]');

Line # 59 : define('PREVNEXT_BUTTON_NEXT', '[Next >>]');

Line # 60 : define('PREVNEXT_BUTTON_LAST', 'LAST>>');

TIA :-)

[mc12345678]

The ability to both make a mistake or not can be equally possible. How hard it is to incorporate the equivalent updated features, well if you have a file compare program, it shouldn't be too difficult to address the differences between the original file and the one provided with the template. Would basically like look for the old code that is expected and add the new code that is needed.