3 .ds ;G \\*(;G\\f\\$1\\$3\\f\\$2
4 .if !
\a\\$4
\a\a .Af \\$2 \\$1 "\\$4" "\\$5" "\\$6" "\\$7" "\\$8" "\\$9"
7 .ie
\a\\$3
\a\a .ft \\$1
11 .Af "\\$1" "\\$2" "\\$3" "\\$4" "\\$5" "\\$6" "\\$7" "\\$8" "\\$9"
16 .aF 5 \\n(.f "\\$1" "\\$2" "\\$3" "\\$4" "\\$5" "\\$6" "\\$7"
19 .aF 5 1 "\\$1" "\\$2" "\\$3" "\\$4" "\\$5" "\\$6" "\\$7"
22 .aF 1 5 "\\$1" "\\$2" "\\$3" "\\$4" "\\$5" "\\$6" "\\$7"
24 .de EX \" start example
41 sig \- signal interface routines
46 .L "int sigunblock(int sig);"
47 .L "int sigcritical(int op);"
53 from within a handler currently servicing
57 controls a critical region for the
68 returns non-zero if any signals are being held in the current
70 Signal critical regions may be nested.
71 The current critical region level is returned,