Version: 1.0   Sign up to be notified by email when a new version is posted

For a more-featured script for dealing with layer markers please check out:
Layer Marker Batch Editor

Based on a user request the AE-LIST, Layer Marker Rename and Number.jsx will rename and number all the markers on selected layers.

It has the option to add the layer name to the marker name as well as keep any existing marker names.