Is the details of support level for Postgres in HeidiSQL documented anywhere?

I noticed that HeidiSQL does not display Postgres partial indices. Is there a definite list of what Postgres features are not supported by HeidiSQL?

PostgreSQL has many features which are not supported in HeidiSQL's table/routine/... designer forms. There is no complete list, but the tabs tell you what should be supported. E.g. indexes, foreign keys and such. Are partial indexes similar to normal indexes, but with a length restriction, or?

See https://www.postgresql.org/docs/current/indexes-partial.html