The number of different webpages describing troggle, configuring the server troggle runs on, maintaining the underlying Django system, current documentation, future design issues and historical decisions is all getting a bit voluminous. So we need a complete index:
Troggle - Introduction - what it is
Troggle - initial training - start here for complete beginners
Troggle - the Users - Who needs to know What and When
Troggle - Surveys & Caves - Trips, surveys, explorers, sketches, data...
Troggle - Fixing things - users' manuals for data import
Troggle - Maintenance - list of maintenance tasks
Troggle - Architecture - diagrams, files, structure
Troggle - Data Model - syntax-coloured list of classes, instance variables and foreign keys
Troggle - What it does Badly - Design Decisions for the Future