TatukGIS products support a wide variety of symbol types: BMP, WMF, TrueType, SVG, and the U.S./NATO military standard CGM (download from: http://www.gwg.nga.mil/pfg_documents.php).

One could use, for example:

  ll.MarkerSymbol := SymbolList.Prepare('logo.bmp');
or
  ll.MarkerSymbol := SymbolList.Prepare('logo.cgm');
or
  ll.MarkerSymbol := SymbolList.Prepare('Arial:65:bold:italic');

where '65' means decimal code of a character.