Open Reanimator
Go to the View menu
Click on File Explorer
Then when that starts, click on the Advanced Commands tab and
Then click on Level Rule Files
Select the location where you want them to be converted to
go to data/background/city and open rule_pmt01.drl.xml
And you'll see:
<?xml version="1.0"?>
<LevelRules xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<FileHeader>
<RuleName>Rule_pmT01</RuleName>
</FileHeader>
<LevelRule>
<Room>
<RoomDesc>bldg_E_PedMall_A[Tutorial]</RoomDesc>
<Unknown>0</Unknown>
<X>30.0000019</X>
<Y>-9.999964</Y>
<Z>1.14440918E-05</Z>
<Rotation>0</Rotation>
</Room>
<Room>
<RoomDesc>bldg_E_PedMall</RoomDesc>
<Unknown>0</Unknown>
<X>-7.7139864</X>
<Y>-29.9999676</Y>
<Z>1.14440918E-05</Z>
<Rotation>3.14159274</Rotation>
</Room>
<Room>
<RoomDesc>bldg_F</RoomDesc>
<Unknown>166</Unknown>
<X>11.143012</X>
<Y>-28.8569717</Y>
<Z>0</Z>
<Rotation>4.71239138</Rotation>
</Room>
<Room>
<RoomDesc>bldg_F</RoomDesc>
<Unknown>165</Unknown>
<X>11.14301</X>
<Y>-11.1429815</Y>
<Z>0</Z>
<Rotation>1.57079852</Rotation>
</Room>
</LevelRule>
</LevelRules>
This shows 4 rooms(although 2 are the same file), they are the .rom files.
I don't know what the <unknown> element is.
<X>, <Y>, and<Z> specify the relative location from some unknown origin.
<Rotation> is in radians.
There are more rule_pmt files.
These files are for russell square.
In Reanimator, open LEVEL_DRLG_CHOICE, index 0 is russell square, it uses drlg 8(Tutorial), so open LEVEL_DRLGS, look at index 8 Tutorial, it's drlgRuleSet is DRLG_PedMallTutorial.
Then if you open LEVEL_RULES and look at index 43, it has a drlgFileName of Rule_pmT01, and a drlgRuleSet of DRLGPedMallTutorial, the same as in LEVEL_DRLGS.
So obviously, they're linked in some way, but that's the extent of my knowledge.
I will say that it should be possible to change the values in the rule_*.drl files, it may even be possible to add new <Room> elements, but I don't know for certain.