Hello,
It would be useful to be able to define an anchor point relative to another anchor point:
@startuml
clock clk with period 1
binary "enable" as EN
concise "dataBus" as db
@0 as :start
@5 as :en_high
@10 as :en_low
@en_high-2 as :EnHighMinus2
@:start
EN is low
db is "0x0000"
@:en_high
EN is high
@:en_low
EN is low
@:EnHighMinus2
db is "0xf23a"
@:en_high+6
db is "0x0000"
@enduml