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diff --git a/docs/users_guide/ffi-chap.xml b/docs/users_guide/ffi-chap.xml
index 2d2c5a0..b33e95a 100644
--- a/docs/users_guide/ffi-chap.xml
+++ b/docs/users_guide/ffi-chap.xml
@@ -19,7 +19,7 @@ Foreign function interface (FFI)
The FFI libraries are documented in the accompanying library
documentation; see for example the
- Foreign module.
+ Foreign module.
GHC extensions to the FFI Addendum
@@ -64,7 +64,7 @@ OK:
-
+
Primitive imports
GHC extends the FFI with an additional calling convention
@@ -476,6 +476,15 @@ int main(int argc, char *argv[])
threads, but there may be an arbitrary number of foreign
calls in progress at any one time, regardless of
the +RTS -N value.
+
+ If a call is annotated as interruptible
+ and the program was multithreaded, the call may be
+ interrupted in the event that the Haskell thread receives an
+ exception. The mechanism by which the interrupt occurs
+ is platform dependent, but is intended to cause blocking
+ system calls to return immediately with an interrupted error
+ code. The underlying operating system thread is not to be
+ destroyed.
@@ -498,7 +507,7 @@ int main(int argc, char *argv[])
threads, which are Haskell threads tied to a
particular OS thread. For information on bound threads, see
the documentation
- for the Control.Concurrent
+ for the Control.Concurrent
module.
@@ -563,7 +572,6 @@ int main(int argc, char *argv[])