ON TRANSMISSIONS

You can't use transmission trigger actions reliably in briefings. If the amount of text
you have entered in is above a certain limit, it will flash for a second before vanishing
instead of scrolling slowly like it's supposed to do, no matter how long you set it to
appear for. While I don't know what causes this issue, I know the basic workaround:
DON'T USE TRANSMISSIONS. Instead, use a combination of text message, display
speaking portrait, play wav, and wait in order to get the same result as transmission.

ON TRIGGER ACTION LIMITS
In briefings, triggers fire (run) completely differently. For one, you'll notice that there
aren't any conditions. This makes sense from a campaign mission standpoint, but one
might ask, 'what if I want specific things to trigger only after other parts of my
briefing have already occurred?' The answer to this question is simple: make a new
trigger entry. If you have two briefing trigger actions stacked on top of one another
instead of happening within the same trigger, the second one will fire only after the
first one has finished. This means that you can have a lot of trigger actions - enough
to break the 64 limit, which I have done many times in the past - and just have it spill
over to a second or even a third trigger before the briefing finishes. You can also use
this function to create individual blocks of a briefing, making it easier for you to edit or
troubleshoot on the fly.

ON TEXT FORMATTING
You don't need to follow text formatting rules when using briefings. Just let the text
run on and on until you're finished with your entry. Pressing enter will separate lines
of text, if you so desire, and spaces still work the same way. Colours are entirely
different, though, and it will take some experimentation to figure out what code does
which. Some are completely unreadable. You can put the name of the speaker in the
text entry if you want, but I like to have speakers known by their voice and portrait.