What specifically are you wanting to know about it? It is hard to give a description of what it is doing exactly without knowing more about the fields, tables, and data that is contained in there.
At a basic level it is editing a record in the [_DBID_PARAMETERS] table with a record id of 5 and inserting [Week key] into field 24. Then it runs a saved import with an ID of 10 on the [_DBID_WEEKLYPRODUCTSINVTY] table. You then end up on a record in edit mode on the [_DBID_WEEK] table , the record id will be whatever is recorded in [Week RID] on the table the button you are clicking is on/from.
The _DBID_<insert table name> parts above may be different from the actual table names. You can find out what each table is called by going to the Advanced Settings for a table and it will be at the bottom of the page.