maybe i didnt google or forum search the right terms but I cant find an explanation for what meshes actually are? I have a suspicion they have something to do with movement...
Mesh's , bluntly is a graph mesh that MQ2Navigation uses to move you across a zone. You can make your own by using the eqnavigation.exe or wait until i finish the project of putting them all together bundled by expansion. Also you can also search this area for which zone shortname you need.