Helvetica is a very popular font all over the world and is most widely used in signage. This is because this font has a very neutral character and does not convey any meaning of its own unlike some stylish fonts. The best part about this font is its simplicity which makes it ideal for legal and official documents and is used by the US government for this purpose. The Helvetica Extra Compressed is a tighter version of the Helvetica Condensed. It can be used where you want a neutral font, but also need to save space. However, one needs to be careful to keep the font size sufficiently large otherwise it is difficult to read from a distance.