The file list window contains a list of items which are placed there as a result any one of the following actions. The list can contain any of the following:
1. Items located during a standard Find...
2. Items dropped on File Buddy with the appropriate drop keys held down, or if the Default Drop Action preference is set to View in List in the Preferences dialog.
3. Items located as a result of using the Find Resources... command.
4. Duplicate files found by the Find Duplicate Files… command.
5. Items added to the list using the Add To List... command.
The Buttons
Use Balloon Help to get a description of any individual button with the exception of the Power Popup button.
The Power Popup button   pops up a menu of the following commands:
Change Names...
The Change Names... command lets you change multiple file names at the same time. For example, use it to add or remove name extensions like ‘.txt’ from a group of files, or prefix a collection of file names with one or more characters.
Delete Resource Forks
Does just what it says. Use with caution, as many files become useless without their resources.
Key Scrolling
The file list supports key scrolling. I.e., the list scrolls to match characters you type in. Typing characters less than 2/3 of a second apart concatenates them together and looks for the string. After 2/3 second without additional characters, the string starts over.
Secondary Sorts
The file list supports sorting by a second criteria. For instance, you can sort the items by name, and then sort them so items with the same name are sorted by modified date. Command click the secondary heading to do a secondary sort.
Contents of the file list can be saved to a tab delimited text file. Only info under visible headings is saved.
The file list has an absolute limitation of 16,000 items. However, performance will slow down long before that, and there may be other considerations that impose a lower limit. I have successfully found and displayed over 3200 items with the default memory size of 700K. I don't really know what the practical limitation is on the number of items, so if you are conducting a search that will yield 10,000 items, save your work and hold on to your seat.
Holding down the Option key while doing anything that initiates an action to items in the list will signal File Buddy to quit or close the file list window (a preference in the Preferences dialog) after taking the action. For example, if you hold down the option key while clicking the Show button, File Buddy will quit (or close the window) after sending a show message to Finder.