Help screen column header List Filter
From Joomla! Documentation
- Filter. In the upper left corner just above the column headings is a Filter field and two buttons, as shown below:
If you have a large number of items on the list, you can use this filter to find the desired item(s) quickly. Enter either part of the title and press 'Go' to display the matching items. You can enter in whole words or part of a word. For example, "ooml" will match all titles with the word "Joomla!" in them. You can also search for a specific item id by entering "id:" followed by the id number. For example, "id:123" will find the item with an id of '123'.