==== Important Files ====
<tabbox Greenstone3>
//GSDL3HOME is the main greenstone3 directory. GSDL3WEBHOME is, by default, the GSDL3HOME/web directory, but this may be moved to somewhere else.//

==== Log files ==== 
**greenstone.log** : 
  * lives in GSDL3WEBHOME/logs
**server.log** : 

**usage.log** :
<tabbox Greenstone2>

//GSDLHOME is the main gsdl or greenstone directory.//

==== Mapping files ==== 
**dc2marc-mapping.xml** : Maps Dublin Core to MARC field numbers
  * lives in GSDLHOME/etc
**qdc2marc-mapping.xml** : Maps Qualified Dublin Core to MARC field numbers
  * lives in GSDLHOME/etc
**marctodc.txt** : used by MARCPlug for mapping MARC field numbers to Greenstone-style metadata.
  * lives in GSDLHOME/etc

==== Database files ==== 
**history.db** : stores search history information if this has been enabled (on preferences page)
  * lives in GSDLHOME/etc
**users.db** : stores any user account settings generated by the administration facility. These accounts are used by the GLI client and GLI applet.
  * lives in GSDLHOME/etc
**key.db** : stores random keys for users. Used in authentication and collector/depositor?? Not sure about this.
  * lives in GSDLHOME/etc
==== Log files ==== 
**usage.txt** : log of all commands sent to the library - only generated if logging is enabled in main.cfg (set logcgiargs to true)
  * lives in GSDLHOME/etc
**error.txt** : log of errors that occurred in the run time library
  * lives in GSDLHOME/etc
</tabbox>