TextSelectionAffinity.downstream
An downstream selection affinity. In this case, the cursor is associated with the character immediately after it.
Declaration
case downstreamDiscussion
In the context of our example hello|مرحبا, with a downstream affinity, the cursor would be associated with the first character of “مرحبا”. If you were to type in Arabic, the characters would be added before the “م” in “مرحبا”, since Arabic is written right-to-left.