Deleting folder listing

[cyrix]

In Winmerge, when you select File > Open, you get a box entitled 'Select Files or Folders'.
Is it possible to delete the drop-down list of previously selected folders?
I've searched the Registry, but couldn't find anything relating to it.

[jtuc]

Pressing Shift+Delete while the drop-down list is dropped down deletes the currently selected entry.

[cyrix]

Doesn't work with me. When an entry is highlighted, just pressing Delete on it's own (or Shift+Delete) just
clears that line, but it's still there in the listing which, in my case, is currents 8 items.