This is documentation for Mathematica 3, which was
based on an earlier version of the Wolfram Language.
 Off Off[ symbol :: tag ] switches off a message, so that it is no longer printed. Off[ s ] switches off tracing messages associated with the symbol s. Off[ , , ... ] switches off several messages. Off[ ] switches off all tracing messages. The value of symbol :: tag is not affected by Off. Off[ s ] is equivalent to Off[ s ::trace]. Off[ ] is equivalent to Off[ s ::trace] for all symbols. See the Mathematica book: Section 1.3.11, Section 2.8.21. See also: On, Message, Check. Further Examples This prints a warning message. In[1]:= Log::argt: Log called with 3 arguments; 1 or 2 arguments are expected. Out[1]= You can switch off the warning message with Off. In[2]:= In[3]:= Out[3]= This switches on tracing of all symbols. In[4]:= On::trace: On[] --> Null. In[5]:= Set::trace: a = 5 --> 5. Out[5]= In[6]:= a::trace: a --> 5. 2 2Power::trace: a --> 5 . 2Power::trace: 5 --> 25. 2Plus::trace: a - c --> 25 - c. 2b::trace: b[a - c] --> b[25 - c]. Out[6]= This switches tracing off. In[7]:=