These are the positions in the status field with all caps letters, starting from the left.
Subdesktop currently active. Shows a T if tiled, or a - if untiled.
Clickthru on or off. Shows a C if on.
Tile Resizing on or off. Shows an R if on.
Skip Focus on or off. Shows an S if on.
Move/resize changes window 5% of screen size instead of 1 pixel. Shows an B if on.
Hidden Windows exist. Shows an H if the current screen has any hidden windows.