CIGAL Reference Manual, Chapter 6 (RealTime): r_fork
usage: r_fork opflg eflag ltime [Flag]
R_FORK is a REALTIME operator. It initiates an asynchronous command stream to execute the block of commands between this R_FORK and the corresponding R_END.
The FLAG argument controls options. It is a bit-flag with the following meanings (combine options by addition):
2 - this block of commands cannot be made synchronous by a R_SYNCH command in the calling fork. 4 - this block should use RT display screen 2 (see RT1RECT, SCR1RECT variables).
See Also:
SCR1RECT],
[[jvs:cigal:manual:chapter4:rt1rect|RT1RECT]\\
[[jvs:cigal|CIGAL Home,
CIGAL Manual,
RealTime List,
Manual Help