It is easy to change the length of lines. The length of a line will affect reading speed. The longer the lines the wider should be the vertical space between them. Readers tend to dislike both very short and very long lines. Quite often the optimum line length seems to be about 1 1/2 alphabets– 42 characters. This is nine to eleven centimetres with optimum character size, ten to twelve points, at a normal reading distance. A text column may be widened up to 120–130 millimeters to accommodate more text, and still be easy to read for an experienced reader. It is quite clear that too wide lines impair reading. In my opinion the maximum line should not have much more than 60–70 characters. The optimum line length should be found for each individual purpose and each audience. Example:-
Long lines The main components in message design are words, visuals and forms. These main components may be used in many different ways to produce, transmit and interpret messages of various kinds in different communication situations.