On the Build Page, the Platform target list is set to Any CPU. On the Application Page, the Output type list specifies that the project is an application. On the Application Page, the Target framework list specifies the .NET Framework 4.5.
Definition of hashtag. : a word or phrase preceded by the symbol # that classifies or categorizes the accompanying text (such as a tweet)
Hashtag. A hashtag is a number symbol (#) used to label keywords in a tweet. The name hashtag was coined by Twitter and combines the word hash (another name for the number symbol) and  tag , since it is used to tag certain words.