This file is not an XML file. This is not an XSD XML Schema Definition. Instead, it's a more human-readable, informal format for describing the structure of the circlemud_data.xml file.

There are basically five parts: mobs, rooms, zones, shops, and objects. These are described in the building.txt file which describes the format of the original CircleMUD data files.

Any of the attributes which have a boolean "true" or "false" value are false by default. If the attribute does not exist, consider it false.

This description isn't complete. You should read through the building.txt file and maybe look at the python source code files to find out all the possible enumerated values.

<?xml version="1.0" ?>
<circlemud>

<mobs>
    <mob vnum="" alignment="" type="" level="" thac0="" ac="" maxhp="" barehanddmg="" gold="" xp="" loadposition="" defaultposition="" sex="">
        <alias name="" />
        <shortdesc>short description</shortdesc>
        <longdesc>long description</longdesc>
        <detaileddesc>detailed description</detaileddesc>
        <action sentinel="bool" ... />
        <affection blind="bool" ... />
        <extended barehandattack="" str="" ... />
    </mob>
</mobs>

<zones>
    <zone vnum="" name="" startroom="" endroom="" lifespan="" resetmode="">
        <mobs>
            <mob vnum="" globalmax="" room="">
                <equipped obj="" globalmax="" wornon="" />
                <inventory obj="" globalmax="" />
            </mob>
        </mobs>
        <objects>
            <object vnum="" globalmax="" room="" />
            <contains>
                <object vnum="" globalmax="" />
            </contains>
        </objects>
        <doors>
            <door room="" exit="" state="open|closed|locked" />
        </doors>
        <cleanup>
            <obj vnum="" room="" />
        </cleanup>
    </zone>
</zones>

<objects>
    <object vnum="" type="" value0="" value1="" value2="" value3="" weight="" cost="" rent="">
        <alias name="" />
        <shortdesc>description</shortdesc>
        <longdesc>description</longdesc>
        <actiondesc>description</actiondesc>
        <effects glow="bool" ... />
        <wear takeable="bool" ... />
        <typespecific charge="42" ... />
        <extradesc><keyword>...</keyword/>description</extradesc>
        <affect type="none|strength|dexterity|intelligence|wisdom|constitution|charisma|class|level|age|charweight|charheight|mana|hit\Move|gold|experience|ac|hitroll|damageroll|saveparalysis|saverods|savepetrification|savebreath|savespell" value="" />
    </object>
</objects>

<shops>
    <shop shopnum="" profitwhenselling="" profitwhenbuying="" fights="bool" banks="bool" shopkeepervnum="" roomvnum="" open1="0-28" close1="0-28" open2="0-28" close2="0-28">
        <forsale>
            <item vnum="" />
        </forsale>
        <willbuy light="bool" scroll="bool" wand="bool" staff="bool" weapon="bool" fireweapon="bool" missile="bool" treasure="bool" armor="bool" potion="bool" worn="bool" other="bool" trash="bool" trap="bool" container="bool" note="bool" drinkcontainer="bool" key="bool" food="bool" money="bool" pen="bool" boat="bool" fountain="bool">
            <willbuyname>name</willbuyname>
        </willbuy>
        <messages>
            <playercantbuy>message</playercantbuy>
            <playercantsell>message</playercantsell>
            <shopdoesnotbuy>message</shopdoesnotbuy>
            <shopcantafford>message</shopcantafford>
            <playercantafford>message</playercantafford>
            <shopsolditem>message</shopsolditem>
            <shopboughtitem>message</shopboughtitem>
            <temper>message</temper>
        </messages>
        <wontdealwith warrior="bool" thief="bool" cleric="bool" magicuser="bool" neutral="bool" evil="bool" good="bool"  />
        <room vnum=""/>
    </shop>
</shops>

<rooms>
    <room vnum="" name="" type="" zone="" dark="bool" indoors="bool" nomob="bool" peaceful="bool" soundproof="bool" notrack="bool" nomagic="bool" tunnel="bool" private="bool" godroom="bool" house="bool" house_crash="bool" atrium="bool" olc="bool" bfs_mark="bool">
        <desc>Long description</desc>
        <exit direction="north|east|south|west|up|down" type="nodoor|normal|pickproof" keynum="" roomlinked="">
            <exitkeyword keyword="" />
        </exit>
    </room>
</rooms>