How to export results obtained by "Display" in GAP to a .txt file

Question

I started to use GAP for computing table of characters for symmetric groups. I would like to export the result of the following

Display(CharacterTable(SymmetricGroup(4)));

into a .txt file (which later on I would like to import to Mathematica). My first guess was to use

PrintTo("file1",Display(CharacterTable(SymmetricGroup(4))));

but it does not work. How to do it properly?