The following files must always be present in DFBRIEF.LFD:

PLTTbrf-jan Palette to use for briefings DELTcursor Cursor for briefings and PDA ANIMguns Weapons screen in PDA ANIMitems Items screen in PDA

There must also be one or more briefing backgrounds as necessary:

ANIMbrf-jan Jan ANIMbrf-mon Mon Mothma ANIMbrf-nil Jabba

Briefings are stored in DELT sections of dfbrief.lfd, named after the level.

The width of the scrollable region seems to be hardcoded in the game, so the only field we'll want to change is SizeY.

Objective screens are stored in ANIM sections of dfbrief.lfd, also named after the level. The first DELT in the ANIM has all the goals in green text. The following DELTs have one goal each in yellow text. They are overlaid on the first DELT when the goal has been completed. See GOL file

See also BRIEFING.LST