You can download the help document by clicking HERE

With regards the rumoured 40 entity limit for the editor, that information is incorrect and below are some bullet points to help clear up the matter:

63 entities can be held in memory at all times.

These entities can be anywhere on the island.

These can be vehicles or soldiers.

Flashpoint uses spawning extensively to add and remove soldiers and vehicles from the world and replace dead soldiers. Basically this means that you can spawn and despawn units, so if you wanted to have guys disappear because they’re too far away from the battle or not needed anymore, then you can and free up the spaces they used.

You can set up vehicles such as tanks with “virtual crews” so that the tank and “virtual crew” are classed as just one entity eg. a vehicle with no observable units mounted like the tanks can have a virtual crew which only counts as 1 entity and has the effect of a driver/commander/gunner combination.

Only soldiers and vehicles count as entities, meaning adding things like sandbags, barbed wire, gun emplacements, concrete walls, do not count towards the entity total.