What does the "E" with the arrow on the signal?

Hello MATLAB Community, i hope you can help me and tell me what the E with arrow on the picture means?

Where does it come from? thanks for your help.

Answer 1

[Alan Moses]

SimEvents models no longer require gateway blocks. It automatically handles any exchange of data across the time and event domains by automatically inserting gateways where needed. These positions are annotated in the model using “E”. You can find it here under the section “If Connected to Gateway Blocks”. You may also find the above explanation here under the section “Domain Crossings Between Time Domain and Event Domain”.