GridSideIndicators will no longer be updated! Following the discontinuation of Grid with the release of patch 9.0 (Shadowlands pre-patch) and subsequent transition to the new Grid fork named Plexus (see announcement at https://www.wowinterface.com/downloads/info5747-Grid.html), this addon is no longer needed as Plexus has added the top/bottom/left/right indicators to its core functionality.
Thank you to all who used the addon over the years! -- dratrr
Legacy information follows
Plugin to Grid that adds 4 indicators, one to each of the sides of Grid frames: Top, Bottom, Left and Right.