While sane coders generally use items called "variables," the LabView environment embraces the concept of "wires," with attendant graphical representation

Wire properties
  - Colors
      - Orange: real
      - Blue: integer
      - Green: boolean
      - Pink : character string

  - Line weight
      - Thin, hairline: scalar
      - Medium: 1-D array
      - Thick: 2-D array