Making Radio "Supplementary channel" codes permanent.

[salix_catus]

:g for guard, :s for silicon

I like this option best, since :g is already used on command sets and no one has to retrain with :s

I disagree. Security is a more commonly heard word than synthetic. The radio codes should be easy to remember. Dont base it on what you are used to, think about new players. The most comonly heard a: word is AI.