The constant _INTRODUCTION_SUITE tag allows you to customize the string displayed in the text cut by the #INTRODUCTION tag.
The default value for this constant is:  (...)
To set another value, edit the file config/mes_options.php (See the article dedicated to it).
Example :
// Define a custom caesura at the tag #INTRODUCTION
define('_INTRODUCTION_SUITE', ' [...]');
See also: #INTRODUCTION, _COUPER_SUITE