The widget provides a few options to customise the list of recent posts:

• The maximum number of posts to list
• A choice between:
  • Listing the recent posts from all categories.
  • Listing the recent posts from some categories. You then have to enter a list of category IDs separated by commas (i.e. "5,10,13" will show recent posts from the categories 5, 10 and 13)
  • Listing the recent posts from all categories but some. You then have to enter a list of category IDs separated by commas (i.e. "5,10,13" will show recent posts from all the categories except the ones listed exclusively in categories 5, 10 or 13. Note that if a post belongs to category 1 and 10, it will be listed.)