The English language has rules and structures that can make things clear when communicating on paper or in person. One example is a semicolon (;). the semicolon is used to combine two complete sentences. An example would be: Susan is a genius; her record of accomplishments is off the charts. Another punctuation is called the colon (:). The colon is used most of the time when listing items or examples. An example would be: 1. I just used one or 2. This is the example.
For more information on colons and semicolons visit: http://www.gcsu.edu/writingcenter/colonrules.htm