The blue box with number on the VFR terminal area chart is the ceiling of class D airspace in hundreds of feet ( A minus ceiling value indicates surface up to but not include that value.)
The blue solid line on the VFR terminal area chart is class B airspace
The blue dashed line on the VFR terminal area chart is class D airspace
Paved Runways
Rotating airport beacon.
IFR departure routes
top number is the ceiling in hundreds of feet MSL Bottom number is the floor in hundreds of feet MSL
IFR Arrival routes
The gray line on the VFR terminal area chart is Terminal Radar service area (TRSA)
part time control tower.
followers the common traffic advisory frequency.
hard surface runways 1500 ft or longer.
The magenta dashed line on the VFR terminal area chart is class E airspace