I think it was right post

HE is backward compatible, so old features are still inside

Feature was added in 1.43:
- New. New XML property added which controls visibility of markers in editor window: settings.xml -> <Source_Editor><Marker line="true" position="true" anchor="true" selection="true"/><Source_Editor> By default all markers are enabled. To disable marker set attribute value to false (by default node does does not exist, because it equal to default). Details…
So, to disable all markers, you need to modify settings.xml and add this line to <Source_Editor> section:
<Marker line="false" position="false" anchor="false" selection="false"/>BR, Alex