CMMN — More intuitive symbols for entry and exit criterion

n the visual notation, a shallow and a solid diamond symbol are used for depicting entry and exit criterion.
Both symbols are not intuitively understandable. Someone who learns the CMMN notation must explicitly learn the difference between shallow and solid symbol. It is likely that inexperienced modelers will mistake one symbol for the other.

Suggestion: Use an incoming arrow symbol (similar to the UNICODE symbol 21E8) for a Sentry serving as entry criterion and analogously an outgoing arrow symbol for a Sentry serving as exit criterion. This notation will be understood intuitively.

Note: I am aware of the fact that the currently suggested symbols are already used in the scientific works on the GSM approach. However, the CMMN standard is aimed to be used by a large number of people, including business people who do not have too much time to learn the notation (see the description of target users in section 4.3.). It would be simple for the few scholars who read the work on GSM to learn the new symbols. For inexperienced modelers, easy-to-lern symbols are a great help for adapting the language.

Reject issue.
Revised Text:

Disposition: Closed, no change