I think anyone who Boos should themselves be booed, and to let players know who's booing who,
we should hold up blue or white cards to let them know.
Coloured cards can be found at any good retail outlet.
Over time, the laws have been amended, and since 1886 they have have been maintained by the International Football
Association Board (IFAB).
THE LAWS are the only RULES OF association football FIFA permits its members to use.
I don't understand your point of view, Officials should be able to keep up with the pace of the game by reading the game,
also if a linesperson has not kept up with play he/she should not guess as to whether it was offside.