id:string ->
title:string ->
descr:string ->
params:Tactical.parameter list ->
object
method descr : string
method get_field : 'a Tactical.field -> 'a
method id : string
method params : Tactical.parameter list
method reset : unit
method virtual select :
Tactical.feedback -> Tactical.selection -> Tactical.status
method set_field : 'a Tactical.field -> 'a -> unit
method title : string
end