Each Contact is allocated a Title e.g. Mr, Mrs, Ms etc.
Contact Titles can be accessed via File - >Configuration -> Contacts - >Titles
New Titles can be created at any time and there is no limit to the number of them defined.
When creating a Title the following fields can be specified:
Gender - select either Male, Female or Unknown from the drop-down list
Default Salutation - usually a Contact's Salutation will be their First Name, or their Title and their Last Name. If neither of these are available, e.g. if a Company is entered, then the Salutation can be defaulted to a generic value such as "Sir/Madam"