Hi Derek
If you want to display markers on a map then the simplest option is to use UMap at http://umap.openstreetmap.fr/en/
There you can upload your point and display them on a map which you can then share.
Hope this helps.
Phil

I have reverted this changeset

Hi, why have you removed landuse from these objects?

Hi, to osm. I am a bit confused by this edit. What are you trying to map. They look a bit like grid references which is a strange thing to map.

Cheers Phil

Hi, this edit has caused some serious damage to the database as it has prevented routing through the Port of Holyhead. The access roads are certainly not private, not sure why you would think they are. Anybody can use this route, providing they pay and have any paperwork needed. I have spotted that this is not the first time that you have done this.
The tag private is not about ownership, it is about access.
I am in the process of cleaning up these errors.
Cheers Phil

Hi, only just spotted this edit but it has gone very very wrong.

In changing to to highway=road you have completely broken routing through the Port of Holyhead. See highway=road which says it is intended to indicate that the road is totally unknown type and to prevent routers using it.
Please also use meaningful changeset comments, update tells the community nothing about what you are trying to achieve.
Cheers Phil

Reverted due to use of invalid sources

Reverted, this is not a market - Вернулся, это не рынок

Hi, please could you explain why you have changed the tagging of this building?

It has not been a market for some years and it was certainly a building and arts centre last week.

Do you have explict permission to copy from the first website?
Wikipedia is not a compatable source for OSM and must not be used https://help.openstreetmap.org/questions/54295/copyright-can-i-map-from-wikipedia.

Maybe peaks, but I would call them spot heights.

Hi, just wondering what source you have used for this edit. In particular where did the elevations come from, Have you been there and measured them?
Also they are not really peaks, they are a bit rounded hills.
Cheers Phil

Hi, welcome to OSM. In OSM we map what exists on the ground. This area is clearly a recreation ground, it was previously mapped as such, OS Opendata call it a recreation ground and I can clearly see it is an area of sports pitches. This is not a park in OSM terms.
Please continue editing but please do not mistag things.

Cheers Phil

Reverted

Reverted

Reverted

No longer a live railway since closure of the power station, reverted

Reverted

I am fixing this, it is entirely fictional.

The speed limit is 30 mph as expected.

This is NOT the Telford Main Line, please stop adding false information to OSM. Please remember that it is a public database, used in many applications. Changeset comments should be meaningful and explain what you are doing and why. Yea is just unprofessional,
All of your changes have been incorrect and I am going to revert them.

way/34050994/history can clearly be seen not to be 2 lanes for its entire length, what sources are you using? Have you been there?
Adding incorrect information can cause potentially serous routing errors, we need to ensure that our database is correct and usable.