red funnel icon in the panel tool bar. When it is not active the funnel icon 
is blue. The filter is accessed by pressing the funnel icon button.
Filter
Filters apply to the list of file names.It will reduce the number of entries to those that match the filter text. The text can appear anywhere in the file name. A separate filter can be applied to both sides of the file panel. The file panel filtered text can be activated on any tab. When it is active it shows with the red funnel icon in the panel tool bar. When it is not active the funnel icon is blue. The filter is accessed by pressing the funnel icon button.
Filter
This is the text that is used for filtering the file list.
Apply
When the apply option is ticked the filter will be applied to the current tab list. Note that when the Set Filter window is opened the Apply button will not be set. If the Filter text is changed then it will automatically be set.