B+             Global - Standard console device selection
 C+             Global - Control character interpretation
 D+             Local  - Device I/O buffering
 F16            Global - Number of open files
 G0             Global - Input file buffer redirection
 I+             Local  - I/O error handling
 Include        Local  - Include source file in program file
 K+             Local  - Stack checking code
 P0             Global - Output file redirection
 R-             Local  - Run time index checking
 U-             Local  - Enable Ctrl-C interruption
 V+             Local  - Type checking for passed strings