A lot of the VEAF Mission Creation Tools functionalities are controlled through commands entered in the text of user marks on the F10 map.
This means that, during runtime, a player can go to the F10 map and create a user mark
In this mark, the player enters a text that the VEAF Tools scripts will understand. Of course, it has to follow a specific syntax (see the documentation of the modules) for more detail.
_spawn group, name US infgroup, country USA
The command is sent to the scripts everytime the content of the marker changes:
A lot of modules are programmed to delete the marker as soon as its command is recognized and interpreted, so the second point is often moot.