REFERENCE

This consists of the substitution of words or groups of words by others, with the purpose of avoiding the repetition. They generlly are PRONOUNS.

EXAMPLE:

Last day my mom was written a letter, my mon said that the letter was very important and the letter contained information about a testament. The testament was my grandmother.


WE USE THE PRONOUNS TO AVOID THE REPETITION OF THE NAMES

Last day my mom was written a letter, SHE said that the letter was very important and IT contained information about the testament. It was my grandmother.