Added/modified documentation for function arguments.

diff --git a/misc/system.c b/misc/system.c
index d0a1675..c897371 100644
--- a/misc/system.c
+++ b/misc/system.c
@@ -124,6 +124,8 @@
     return 0;
 }
 
+/**********************************************************************/
+
 static void SYSTEM_CallSystemTimerProc( FARPROC16 proc, WORD timer )
 {
     CONTEXT86 context;
@@ -139,6 +141,8 @@
     wine_call_to_16_regs_short( &context, 0 );
 }
 
+/**********************************************************************/
+
 WORD WINAPI WIN16_CreateSystemTimer( WORD rate, FARPROC16 proc )
 {
     FARPROC thunk = THUNK_Alloc( proc, (RELAY)SYSTEM_CallSystemTimerProc );