diff --git a/uppsrc/Core/CoWork.h b/uppsrc/Core/CoWork.h
index 636d19ef2..77b65d303 100644
--- a/uppsrc/Core/CoWork.h
+++ b/uppsrc/Core/CoWork.h
@@ -43,14 +43,14 @@ class CoWork : NoCopy {
 #endif
 	
 public:
-	void     Do(const Callback& cb)                       { Do(&cb, NULL); }
+	void     Do(const Callback& cb)                           { Do(&cb, NULL); }
 #ifdef CPP_11
-	void     Do(const std::function<void ()>& fn)         { Do(NULL, &fn); }
+	void     Do(const std::function<void ()>& lambda)         { Do(NULL, &lambda); }
 #endif
 
-	CoWork&  operator&(const Callback& cb)                { Do(&cb, NULL); return *this; }
+	CoWork&  operator&(const Callback& cb)                    { Do(&cb, NULL); return *this; }
 #ifdef CPP_11
-	CoWork&  operator&(const std::function<void ()>& fn)  { Do(NULL, &fn); return *this; }
+	CoWork&  operator&(const std::function<void ()>& lambda)  { Do(NULL, &lambda); return *this; }
 #endif
 
 	void Finish();
diff --git a/uppsrc/Core/src.tpp/CoWork$en-us.tpp b/uppsrc/Core/src.tpp/CoWork$en-us.tpp
index a21f17bdc..bcce55d71 100644
--- a/uppsrc/Core/src.tpp/CoWork$en-us.tpp
+++ b/uppsrc/Core/src.tpp/CoWork$en-us.tpp
@@ -31,25 +31,30 @@ submitted by Do in sequence.&]
 [s3;%% &]
 [s0;%% &]
 [ {{10000F(128)G(128)@1 [s0;%% [* Public Method List]]}}&]
-[s4;H0; &]
-[s5;:CoWork`:`:Do`(Callback`): [@(0.0.255) void]_[* Do]([_^Callback^ Callback]_[*@3 cb])&]
-[s5;:Upp`:`:CoWork`:`:Do`(std`:`:function`<void`(`)`>`): [@(0.0.255) void]_[* Do]([_^std`:`:function^ s
-td`::function]<[@(0.0.255) void]_()>_[*@3 lambda]) [*1 `[C`+`+ 11`]]&]
-[s2;%% Adds [%-*@3 cb] or [%-*@3 lambda] to be performed by any thread. 
- .&]
+[s3; &]
+[s5;:Upp`:`:CoWork`:`:Do`(const Upp`:`:Callback`&`): [@(0.0.255) void]_[* Do]([@(0.0.255) c
+onst]_[_^Upp`:`:Callback^ Callback][@(0.0.255) `&]_[*@3 cb])&]
+[s5;:Upp`:`:CoWork`:`:Do`(const std`:`:function`<void`(`)`>`&`): [@(0.0.255) void]_[* Do](
+[@(0.0.255) const]_[_^std`:`:function^ std`::function]<[@(0.0.255) void]_()>`&_[*@3 lambda
+])&]
+[s2;%% Schedules [%-*@3 cb] or [%-*@3 lambda] to be executed. All changes 
+to data done before Do are visible in the scheduled code. The 
+order of execution or whether the code is execute in another 
+or calling thread is not specified.&]
 [s3;%% &]
 [s4; &]
-[s5;:CoWork`:`:operator`&`(Callback`): [_^CoWork^ CoWork][@(0.0.255) `&]_[* operator`&]([_^Callback^ C
-allback]_[*@3 cb])&]
-[s5;:Upp`:`:CoWork`:`:operator`&`(std`:`:function`<void`(`)`>`): [_^Upp`:`:CoWork^ CoWo
-rk][@(0.0.255) `&]_[* operator`&]([_^std`:`:function^ std`::function]<[@(0.0.255) void]_()
->_) [*1 `[C`+`+ 11`]]&]
-[s2;%% Same as Do([%-*@3 cb ][/ or] [%-*@3 lambda]); return `*this;&]
+[s5;:Upp`:`:CoWork`:`:operator`&`(const Upp`:`:Callback`&`): [_^Upp`:`:CoWork^ CoWork][@(0.0.255) `&
+]_[* operator`&]([@(0.0.255) const]_[_^Upp`:`:Callback^ Callback][@(0.0.255) `&]_[*@3 cb])&]
+[s5;:Upp`:`:CoWork`:`:operator`&`(const std`:`:function`<void`(`)`>`&`): [_^Upp`:`:CoWork^ C
+oWork][@(0.0.255) `&]_[* operator`&]([@(0.0.255) const]_[_^std`:`:function^ std`::function
+]<[@(0.0.255) void]_()>`&_[*@3 lambda])&]
+[s2;%% Same as Do([%-*@3 cb ][/ or] [%-*@3 lambda]); returns `*this;&]
 [s3;%% &]
 [s4; &]
 [s5;:CoWork`:`:Finish`(`): [@(0.0.255) void]_[* Finish]()&]
-[s2;%% Waits until all jobs submitted using Do (or operator`&) are 
-finished.&]
+[s2;%% Waits until all jobs scheduled using Do (or operator`&) are 
+finished. All changes to data performed by scheduled threads 
+are visible after Finish.&]
 [s3;%% &]
 [s0;%% &]
 [ {{10000F(128)G(128)@1 [s0;%% [* Destructor detail]]}}&]