Update MEC013.md - working clean-up and consistency between endpoint descriptions.

| **Endpoint**    | **Sandbox Usage**          | **Notes**          |

| ----------------|--------------------------- | ------------------ |

| [/subscriptions/zonalTraffic](https://forge.etsi.org/swagger/ui/?url=https://forge.etsi.org/rep/mec/gs013-location-api/raw/v2.1.1/LocationAPI.yaml#/location/zonalTrafficSubGET) | Subscription related to changes for a zone:  users (devices) entering zone, exiting zone, transition across access points within a zone. <br><br>  Input = <ul><li> zoneId </li><li> interestRealm </li><li> userEventCriteria </li><li> duration </li></ul> | Notification == Zonal Presence Notification <br><br> As a MEC Sandbox User or MEC App, I use this notification to monitor changes in a zone.   |

| [/subscriptions/zonalTraffic](https://forge.etsi.org/swagger/ui/?url=https://forge.etsi.org/rep/mec/gs013-location-api/raw/v2.1.1/LocationAPI.yaml#/location/zonalTrafficSubGET) | Subscription related to changes for a zone:  users (devices) entering zone, exiting zone, transition across access points within a zone. <br><br>  Input = <ul><li> zoneId </li><li> interestRealm </li><li> userEventCriteria </li><li> duration of reporting </li></ul> | Notification == Zonal Presence Notification <br><br> As a MEC Sandbox User or MEC App, I use this notification to monitor changes in a zone.   |

| [/subscriptions/userTracking](https://forge.etsi.org/swagger/ui/?url=https://forge.etsi.org/rep/mec/gs013-location-api/raw/v2.1.1/LocationAPI.yaml#/location/userTrackingSubGET) | Subscription related to changes of a specific user:  zone enter, zone exit, transition across points of access. <br><br> Input = <ul><li> address (device id, user id), </li><li> userEventCriteria </li></ul> | Notification == Zonal Presence Notification <br><br> As a MEC Sandbox User or MEC App, I use this notification to track location changes for a specific user (or device). |

| [/subscriptions/zonalStatus](https://forge.etsi.org/swagger/ui/?url=https://forge.etsi.org/rep/mec/gs013-location-api/raw/v2.1.1/LocationAPI.yaml#/location/zoneStatusSubGET) | Subscription related to changes in zone status:  # of users in a zone, # of users per AP in a zone, etc. <br><br> Input = <ul><li> zoneId </li><li> numberOfUsersZoneThreshold  </li><li> numberOfUsersAPThreshold </li></ul>  | Notification == Zonal Status Notification <br><br> As a MEC Sandbox User or MEC App, I use this notification to monitor changes in a zone. |

| [/subscriptions/area/circle](https://forge.etsi.org/swagger/ui/?url=https://forge.etsi.org/rep/mec/gs013-location-api/raw/v2.1.1/LocationAPI.yaml#/location/areaCircleSubGET) <br><br> *New STF599* | Subscription to monitor the location of a specific user (device) or list of users in relation to a circle area, geo-located circle (defined by coordinates and a radius).  <br><br> Subscription input: <ul><li> UE address(s) </li><li> Circle info: latitude, longitude, radius </li><li> accuracy </li><li> criteria: entering, leaving </li><li> check immediately on subscription </li><li> max frequency of reporting </li><li> duration </li><li> max count - number of notifications. </li></ul>  | Notification (Subscription Notification) – issued on criteria: <ul><li> UE address </li><li> Current UE Location </li></ul> <br><br>  As a MEC Sandbox User or MEC App, I use this notification to monitor a specific location area of my choosing (circle area) in relation to a device or set of devices, also of my choosing.    |

| [/subscriptions/distance](https://forge.etsi.org/swagger/ui/?url=https://forge.etsi.org/rep/mec/gs013-location-api/raw/v2.1.1/LocationAPI.yaml#/location/distanceSubGET) <br><br> *New STF599* | Subscription to monitor the distance of a specific set of user devices (UE), towards another set of user devices.  <br><br> Subscription input: <ul><li> reference address(s) </li><li> monitored address(s) </li><li> distance </li><li> accuracy </li><li> criteria: all within, any within, all beyond, all beyond </li><li> check immediately on subscription </li><li> max frequency of reporting </li><li> duration </li><li> max count (number of notifications) </li></ul> | Notification (Subscription Notification) – issued on criteria: <ul><li> address and current location for all UEs (reference and monitored) </li><li> notification criteria: all within, any within, all beyond, all beyond </li></ul> <br><br>  As a MEC Sandbox User or MEC App, I use this notification to monitor the distance status between two user devices (UEs or terminals) or two sets if user devices.  |

| [/subscriptions/periodic](https://forge.etsi.org/swagger/ui/?url=https://forge.etsi.org/rep/mec/gs013-location-api/raw/v2.1.1/LocationAPI.yaml#/location/periodicSubGET)<br><br> *New STF599* | Subscription to monitor the location of a specific set of user devices (UE).  <br><br>Subscription input: <ul><li> UE address(s) </li><li> max frequency of reporting </li><li> duration </li><li> max count (total number of notifications) </li></ul> | Notification (Subscription Notification) issued on criteria: period (frequency), duration, total # of notifications. <br><br>  As a MEC Sandbox User or MEC App, I use this notification to periodicaly monitor the geo-location of a specific device or set of devices.  |

| [/subscriptions/area/circle](https://forge.etsi.org/swagger/ui/?url=https://forge.etsi.org/rep/mec/gs013-location-api/raw/v2.1.1/LocationAPI.yaml#/location/areaCircleSubGET) <br><br> *New STF599* | Subscription to monitor the location of a specific user (device) or list of users in relation to a circle area, geo-located circle (defined by coordinates and a radius).  <br><br> Subscription input: <ul><li> UE address(s) </li><li> Circle info: latitude, longitude, radius </li><li> accuracy </li><li> criteria: entering, leaving </li><li> check immediately on subscription </li><li> max frequency of reporting </li><li> duration of reporting </li><li> max count (total number of notifications) </li></ul>  | Notification (Subscription Notification) – issued on criteria: <ul><li> UE address </li><li> Current UE Location </li></ul> <br><br>  As a MEC Sandbox User or MEC App, I use this notification to monitor a specific location area of my choosing (circle area) in relation to a device or set of devices, also of my choosing.    |

| [/subscriptions/distance](https://forge.etsi.org/swagger/ui/?url=https://forge.etsi.org/rep/mec/gs013-location-api/raw/v2.1.1/LocationAPI.yaml#/location/distanceSubGET) <br><br> *New STF599* | Subscription to monitor the distance of a specific set of user devices (UE), towards another set of user devices.  <br><br> Subscription input: <ul><li> reference address(s) </li><li> monitored address(s) </li><li> distance </li><li> accuracy </li><li> criteria: all within, any within, all beyond, all beyond </li><li> check immediately on subscription </li><li> max frequency of reporting </li><li> duration of reporting </li><li> max count (total number of notifications) </li></ul> | Notification (Subscription Notification) – issued on criteria: <ul><li> address and current location for all UEs (reference and monitored) </li><li> notification criteria: all within, any within, all beyond, all beyond </li></ul> <br><br>  As a MEC Sandbox User or MEC App, I use this notification to monitor the distance status between two user devices (UEs or terminals) or two sets if user devices.  |

| [/subscriptions/periodic](https://forge.etsi.org/swagger/ui/?url=https://forge.etsi.org/rep/mec/gs013-location-api/raw/v2.1.1/LocationAPI.yaml#/location/periodicSubGET)<br><br> *New STF599* | Subscription to monitor the location of a specific set of user devices (UE).  <br><br>Subscription input: <ul><li> UE address(s) </li><li> max frequency of reporting </li><li> duration or reporting </li><li> max count (total number of notifications) </li></ul> | Notification (Subscription Notification) issued on criteria: period (frequency), duration, total # of notifications. <br><br>  As a MEC Sandbox User or MEC App, I use this notification to periodicaly monitor the geo-location of a specific device or set of devices.  |