Of concern for this thread - These 'SubmenuKeys' didn't make it into the '.xml' files that come with the SC4Tool...
Just for the 'Record' the SubmenuKeys that I have located (in the SimCity_1.dat; as 'Labeled' in SC4Tool) are:
SubmenuKey: 0xEA5AC496 for Landscaping (Raise & Lower Terrain, Erode and Smoothen 'brushes')
SubmenuKey: 0x8A3F1505 for Zoning: Residential Menu (Low, Medium, High Density and Dezone 'brushes')
SubmenuKey: 0x8A3F14DC for Zoning: Commercial Menu (Low, Medium, High Density and Dezone 'brushes')
SubmenuKey: 0x8A3F1502 for Zoning: Industrial Menu (Agriculture, Light & Heavy Industrial and Dezone 'brushes')
SubmenuKey: 0x00004000 for Networks: Road Menu (Roads, OneWayRoads, Avenues, and Streets 'brushes')
SubmenuKey: 0x00004001 for Networks: Rails and Depots Menu (Rails and Monorails 'brushes')
SubmenuKey: 0x00004002 for Networks: Miscellaneous Transport Menu (Subway and LightRail 'brushes')
SubmenuKey: 0x00004003 for Utilities: Power Plant Menu (PowerLines 'brush')
SubmenuKey: 0x00004004 for Utilities: Water Plant Menu (Pipes 'brush')
SubmenuKey: 0x2A49D7CA for Utilities: Sanatation Menu (Landfill and Dezone 'brushes')
SubmenuKey: 0x00004005 for Networks: Highway & Ramps Menu (GroundHighway & Highway 'brushes' and
2*Cloverleaf, 2*OverpassOnramp, 2*ParrallelOnramp, ElevatedT-Intersection and GroundT-Intersection 'plops')
The above is a list of SubmenuKeys to be found in those Exemplars where GroupID=0x2A3858E4.
All of these are Mayor Mode Menu items - which doesn't include the 'fauna' brush from the God Mode Menus, but does
include the Mayor Mode 'Landscaping' items, leading me to believe there may be more of these that need to be documented?
I suspect that there exists one or more Exemplars - similar to the Stage-Development, Airport and Seaport control exemplars -
that link these 'SubmenuKeys' to their respective Menu (Catalog?) functions...
I am just not so sure it is included in any of the accessable .dat files (i.e. it may be 'hidden' in the main program file?).
And I am still contemplating just what the 'UInt32 value' of these 'SubmenuKey' properties might be for?