diff --git a/adm/cmake/occt_defs_flags.cmake b/adm/cmake/occt_defs_flags.cmake
index fb70c15e1a..acadf4a557 100644
--- a/adm/cmake/occt_defs_flags.cmake
+++ b/adm/cmake/occt_defs_flags.cmake
@@ -5,6 +5,12 @@ if(FLAGS_ALREADY_INCLUDED)
 endif()
 set(FLAGS_ALREADY_INCLUDED 1)
 
+# force option -fp:precise for Visual Studio projects.
+#
+# Note that while this option is default for MSVC compiler, Visual Studio
+# project can be switched later to use Intel Compiler (ICC).
+# Enforcing -fp:precise ensures that in such case ICC will use correct
+# option instead of its default -fp:fast which is harmful for OCCT.
 if (MSVC)
   set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fp:precise")
   set (CMAKE_C_FLAGS   "${CMAKE_C_FLAGS}   -fp:precise")
@@ -31,7 +37,7 @@ endif()
 string (REGEX MATCH "EHsc" ISFLAG "${CMAKE_CXX_FLAGS}")
 if (ISFLAG)
   string (REGEX REPLACE "EHsc" "EHa" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
-elseif (WIN32)
+elseif (MSVC)
   set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -EHa")
 endif()
 
diff --git a/src/OSD/OSD.hxx b/src/OSD/OSD.hxx
index 024633b010..f3a1cd2e59 100644
--- a/src/OSD/OSD.hxx
+++ b/src/OSD/OSD.hxx
@@ -53,10 +53,10 @@ public:
   DEFINE_STANDARD_ALLOC
 
   
-  //! A tool to manage threads
-  //!
   //! Sets signal and exception handlers.
-  //! <b>Windows-specific notes<\b>
+  //!
+  //! ### Windows-specific notes
+  //!
   //! Compiled with MS VC++ sets 3 main handlers:
   //! @li Signal handlers (via ::signal() functions) that translate system signals
   //! (SIGSEGV, SIGFPE, SIGILL) into C++ exceptions (classes inheriting
@@ -75,12 +75,13 @@ public:
   //!
   //! If @a theFloatingSignal is TRUE then floating point exceptions will be
   //! generated in accordance with the mask
-  //! <tt>_EM_INVALID | _EM_DENORMAL | _EM_ZERODIVIDE | _EM_OVERFLOW<\tt> that is
+  //! <tt>_EM_INVALID | _EM_DENORMAL | _EM_ZERODIVIDE | _EM_OVERFLOW</tt> that is
   //! used to call ::_controlfp() system function. If @a theFloatingSignal is FALSE
   //! corresponding operations (e.g. division by zero) will gracefully complete
   //! without an exception.
   //!
-  //! <b>Unix-specific notes<\b>
+  //! ### Unix-specific notes
+  //!
   //! OSD::SetSignal() sets handlers (via ::sigaction()) for multiple signals
   //! (SIGFPE, SIGSEGV, etc). Currently the number of handled signals is much
   //! greater than for Windows, in the future this may change to provide better
@@ -92,7 +93,8 @@ public:
   //! When compiled with OBJS macro defined, already set signal handlers (e.g.
   //! by Data Base Managers) are not redefined.
   //!
-  //! <b>Common notes<\b>
+  //! ### Common notes
+  //!
   //! If OSD::SetSignal() method is used in at least one thread, it must also be
   //! called in any other thread where Open CASCADE will be used, to ensure
   //! consistency of behavior. Its @a aFloatingSignal argument must be consistent
@@ -102,6 +104,7 @@ public:
   //! ::throw() will be called) is regulated by the NO_CXX_EXCEPTIONS and
   //! OCC_CONVERT_SIGNALS macros used during compilation of Open CASCADE and
   //! user's code. Refer to Foundation Classes User's Guide for further details.
+  //!
   Standard_EXPORT static void SetSignal (const Standard_Boolean theFloatingSignal = Standard_True);
   
   //! Commands the process to sleep for a number of seconds.