document DBUG_OUTPUT()

misc cleanup

dbug/example1.c

@@ -1,6 +1,3 @@
-
-#include <my_global.h>
-
 main (argc, argv)
 int argc;
 char *argv[];

dbug/example2.c

@@ -1,6 +1,3 @@
-
-#include <my_global.h>
-
 int debug = 0;
 
 main (argc, argv)

dbug/example3.c

@@ -1,6 +1,3 @@
-
-#include <my_global.h>
-
 main (argc, argv)
 int argc;
 char *argv[];

dbug/main.c

@@ -1,4 +1,4 @@
-#include <dbug_long.h>
+#include <dbug.h>
 
 int main (argc, argv)
 int argc;

dbug/user.r

@@ -873,7 +873,14 @@ disabled by DBUG_OFF togeher with the
 .I dbug
 library. So there will be no need to disable asserts separately with NDEBUG.
 .SP 1
-EX:\ \fCDBUG_ASSERT(\ a\ >\ 0);\fR
+EX:\ \fCDBUG_ASSERT(\ a\ >\ 0\ );\fR
+.SP 1
+.LI DBUG_OUTPUT\ 
+In multi-threaded environment disables (or enables) any
+.I dbug
+output from the current thread.
+.SP 1
+EX:\ \fCDBUG_OUTPUT(\ 0\ );\fR
 .SP 1
 .LE