RePings
This mod introduces a ping system (temporary markers) that are displayed for several seconds. The duration of their existence can be configured through configuration files.
Using pings is extremely intuitive. For proper operation, the mod must be installed on both the client and server. To send a ping, simply hold down the V key, select the desired marker type by hovering over it, and release the button. The ping will be sent to all players within a configurable radius or to your team members if the FTB Library mod is installed. If a ping is off-screen, a small icon will appear at the edge of the display, indicating its direction.