If the tree area are enclosed by the heath then yes they should be inner in a heath relation.
If the tree area touches the heath area outer boundary then the heath area does not enclose the tree area - the heath boundary should go, possibly the long way, around the tree area.
This comes down to a 'rule' - multipolygon relations outer ways should not share segments with other members (or the same relation).

Practice?
For instance you have grassland - Way: 1037499472 .. that should be a relation with inners for the tree and heath areas. Relying on the order a render draws them may not work for all renders. This area could be incorporated with the relationship you made here.

Changes made. I note that the grass areas in the prison have not been mapped.

Hi,
The relation/13899526 only has outters - no inners. So the tags can be placed on the outers and the relation removed. Always better to use the simplest solution.

Humm looking at it again .. there is at least one water feature that should be made an inner .. so it is needed .. but not for every area.

opps...

Hi,

This new Relation: San Remo Coastal Reserve (9278066) missed the preexisting Way: San Remo Coast Reserve (376043009) which is still present.

Note the relation has been changed by mappers adding landcovers... so the park relation my not be accurate any more.
I have re-closed the relation following a mapper editing paths...

I have never used any OSM editor but JOSM.

Within JOSM you can move/rearrange the order of stops and ways. You can also add new stops/ways anywhere you like in the relation.

In Public Transport v2 you don't nominate the direction of travel, the direction of travel is from the first stop/way sequentially flowing through to the last stop/way. This is why the order is significant.

Why did I chose to use JOSM? I have been through many training systems, they all start with a 'simple editor' and then 'progress' to the next editor... at the end you get to the most comprehensive editor ... Rather than learn all these different editors I now look for the most comprehensive editor and start with that .. skipping learning the others.

Reverted in full. Only changes the course and lake back to correct relations.

Hi,
This changeset has damaged the multipolygon relation for the Gungahlin Lakes Golf Club. See https://tools.geofabrik.de/osmi/?view=areas&lon=149.11261&lat=-35.18544&zoom=15

Note: The Gungahlin Pond is not all a golf hazard...

Ok... The Golden West Rail Tour basic issues.
stops;
1) stop at the start not present.
2) stops are not in order
3) werris ck plat 1 only shown. Is plat 2 used?
4) all stops included?

ways;

5) does not start at the beginning
6) trip up to Patterson done, but no return ways included, similar for other spurs .. the return needs to be included.

7) does not finish at the end

Hi,
The State Library has an 'underground' connection across to the Mitchell too. I also suspect there is a connection to State Parliament.

Multipolygon relation outer ways cannot share segments.. see https://tools.geofabrik.de/osmi/?view=areas&lon=151.21293&lat=-33.86641&zoom=18

A site relation maybe better.

The DCS Imagery looks better than bing .. and I have found it to be better for location too.

As a user of both libraries ... The Mitchell is where you go for the older Mitchell historic stuff. This has a separate request/collection area. If you request it in the other building you'll be directed to the Mitchell for collection. Additionally there is a more select area for the oldest stuff with more eyes on you. The building is named the "Michell Library' and can be seen over the front entrance, operated by the state library.

These errors should be fixed.

Looks like the residential relation appears.

Hi,
This is where you could have added a gate and the tag access=private to the western side of this track.

Hi,
Welcome to OSM.

Most buildings are 'square' - have right angles. You should be able to use the 'Q' key to square up your entries - simply press the Q key while the building/thing is still being edited and that should make it 'square'.

The website for Sorrento Park is https://www.mornpen.vic.gov.au/Activities/Parks-Reserves/Parks-Recreation/Sorrento-Park
Please try to prioritize the official websites of the operators.

Q1 Is the name for the buildings or the development?

If for the development then a nested relation could be done. The pedantic may chose to make it an inner in the outer residential relation.

If for the buildings .. then site is the best that you can do I think.

Hi,
Multipolygon outer ways cannot share segments. See https://tools.geofabrik.de/osmi/?view=areas&lon=128.25658&lat=-15.54172&zoom=18

Hi,

Multipolygon relations outer ways cannot share segments. See https://tools.geofabrik.de/osmi/?view=areas&lon=115.76253&lat=-32.09809&zoom=18

Possibly a site relation?

Hi,
The area tagged "name=boundary of Tactical mans mountain" ... does not say 'what it is' ... is it a farm? a park?
What? Is? It?