ODA is the same as a fire team, O+/.
A squad is not two dots, it's one. 3 squads in a platoon, hence the 3 dots for a platoon.
Also, I'm curious as to what the triangles are. If they were triangles with no base, it would be an enemy unit in flight.
On the sectors of fire for the automatic weapons, there are solid sections on the left limit that indicate areas where it has grazing fire. This also indicates that it is the gun's FPF, not PDF. If it were a gun laid in on PDF, the PDF would be close to the middle of the sector, not on the left or right limit. The solid/bold portion of the line would only be where the gun has grazing fire so it would start close to the gun and break intermittently due to terrain and then end at 800m (for an M240) where you lose grazing fire and have to start using plunging fire.
Whew, moobob questioned me and I went all sharpshooter- sorry folks.
Originally though, I was wondering if they used the SF icon with section modifier for troops or something like that, I've never seen it before and just wondered if I was missing something.