ExecutionRelationCommand.Commands: type of bendvy-ecs-core@0.1.0.3
Import: import bendvy-ecs-core@0.1.0.3/execution_relation_command.bend as ExecutionRelationCommand
Lines 6-9 of bendvy-ecs-core@0.1.0.3/execution_relation_command.bend: https://jend.leeeet.dev/read.txt?path=bendvy-ecs-core@0.1.0.3/execution_relation_command.bend&start_line=6&end_line=9

import Base
import bendvy-ecs-core@0.1.0.3/world.bend as W

# The closed command declaration binds route and enqueue to the existing Buffer.
# These adapters do not allocate a queue or accept a World callback.
type Commands<-Q:Type,-S:Data> is Type:
  Commands{relate:Q -> W.Handle<S> -> W.Handle<S> -> Q,unrelate:Q -> W.Handle<S> -> Q}

Uses (1):
  https://jend.leeeet.dev/definition.txt?path=bendvy-ecs-core@0.1.0.3/world.bend&name=Handle