DEVELOPMENT_DEBUGRESOURCES - Only loads some resources duing startup, not all monsters, items or maps. The player will be placed on a debug map instead of the “real” world. Enabling this speeds up the game startup time dramatically.
DEVELOPMENT_QUICKSTART - When the game starts, automatically continues the last game. This ay you don't have to see the startup screen when developing.
DEVELOPMENT_DEBUGBUTTONS - Enabled cheat buttons to spawn new monsters, add exp or gold and change the player combat parameters.
DEVELOPMENT_VALIDATEDATA - Enables a lot of consistency checks on the data being loaded from resources. For example, checks that all items exists and that the dialog has correct references.
DEVELOPMENT_DEBUGMESSAGES - Enables logging to catlog. Witht his disabled, no output will be placed in the system log whatsoever.