The Variable Name of a variable is the entry in the Name column of the Variables and Questions tab in Q and in the Name field of the object inspector in Displayr. Each variable name is unique. The names of the original variables are shown in grey font and cannot be modified. Names of copied or constructed variables are shown in black font and can be edited by clicking and typing a new name. Variable names must begin with a letter, and may only contain letters, numbers, and the symbols @ # _ \ $.