Tiny MCE is the rich text editor used for editing the large multilangual text fields like product desription or content of CMS pages. The interface used in PS 1.6 is rather a moderate one and many features were ommited. Just take a look at the available buttons in the classic example .
Fortunatelly, adding extra buttons to the default PS 1.6 tiny MCE is not difficult. Specifically, you will need:
1) Modify the tinyMCE settings
Locate the /js/tinymce.inc.js file, open in in a clean text editor and add the required functionality. Simply inspect the source code in the classic example and add plugins and buttons you need. Alternatively, if this seems complicated, you may use the whole /js/tinymce.inc.js file as described in another tutorial , but be sure to complete the steps 2 and 3 as described below.
2) Disable the html validation
by modifiing the prestashop Validate.php class. For several reasons, it is considered a bad practice to modify Prestashop core classes, one of them beeing the fact that these modification will not persitst through the next upgrade. Therefore:
a) in a clean text editor (e.g. notepad), create a clean file named Validate.php and copy paste the following code inside it:
b) copy the file into the directory /override/classes/
c) delete the file /cache/class_index.php
3) In backoffice go to the Preferences :: General and set the option Allow HTML purifier to off . Without it, the HTML purifier will keep removing certain elements – for example, you will be unable to insert a new window link.