Function not yet implemented

No sprite created

Child sector creation failed

Sector drawing recentered

Map recentered

No sectors were 'joinable'

Sectors joined

First wall must be an outer wall

Set first wall

Stratum top must be above bottom

No such sector or sprite

Created child sector

Snap-to-grid is OFF

Snap-to-grid is ON

Unimplemented sector split, sorry

Sector split

Carved an area out of a sector

Undo completed

Sector drawing aborted

Created a sector

Drawing backed up one point

Deleted a sector

Deleted a vertex