against
alphabet
art
business
button
computer
contour
convention
copyright
dark
duplication
icon
identification
illustration
intellectual
isolated
job
label
legal
letter
license
limit
limitation
line
linear
lineart
management
mark
music
musical
outline
phonogram
producers
property
protection
r
red
register
registered
restrict
sign
silver
symbol
term
text
trade
trademark
web
work