This week I completed refactoring the script tbl_columns_definitions.inc.php. Now the script is very small compared to the previous size before refacotoring. It does not contain any lines of code which contains any html code. All such code is extracted as methods and transferred to the tbl_columns_definitions.lib.php. Also I extracted the several other high level function and transferred to tbl_columns_definitions.lib.php.
My plan for this week is to refactor tbl_structure.php.