When there are many files in a directory, it can be cumbersome to search for a particular file. You can use the Filter tool to display a particular subset of the existing files.
For example, suppose that you are loading a font to be used in the Text module and you only want to display the oblique fonts. All the oblique fonts have “oblique” in the file name, for example, Courier-Oblique, Helvetica-BoldOblique, or Helvetica-Oblique. You would enter “*Oblique*” in the Filter field.
The filter is applied: only the files that have the character string in their file name are displayed in the file browser.