Update the `diagrams` tool to ensure that external entities are always draw in a separate cluster
Update the `diagrams` tool to ensure that external entities are always draw in a separate cluster

LogtalkDotOrg/logtalk3,LogtalkDotOrg/logtalk3,LogtalkDotOrg/logtalk3,LogtalkDotOrg/logtalk3,LogtalkDotOrg/logtalk3,LogtalkDotOrg/logtalk3,LogtalkDotOrg/logtalk3