Restricted Airspace. The accompanying label indicates it as prohibited, restricted, danger, etc. See below.
On some charts prohibited areas are shown by a cross-hatch pattern.
Training, Alert, Caution, and Military Operations Areas
CY(R)-4207 = Country identifier, designation in parentheses, and number
FL 450 = Upper Limit
GND = Lower Limit
SR-SS = Hours active
(MSP ARTCC) = Controlling Agency (Limits may be tabulated)
Dot indicates permanent activation on some chart series.
On USA charts K (indicating USA) and parentheses around the designating letter are omitted.
When restricted airspace areas overlap, a line is shown on the outer edge of each area through the area of overlap.
RESTRICTED AIRSPACE DESIGNATION
A-Alert
C-Caution
D-Danger
P-Prohibited
R-Restricted
T-Training
W-Warning
TRA-Temporary Reserved Airspace
MOA-Military Operations Area
Canadian Alert Area Suffixes
(A) Acrobatic
(H) Hang Gliding
(P) Parachute Dropping
(S) Soaring
(T) Training