Mail evaluation

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 From the writing of a +mail message to the actual reading of the written 
 message, TWO rounds of function evaluation occur. (For what "evaluation" 
 means, see HELP functions and HELP substitutions.) You can choose to 
 inhibit none, one, or both of these rounds of evaluation. This is 
 accomplished by prefixing the "-" command (see HELP mail writing) with 
 none, one, or two "]" characters, respectively. (See HELP ] for more 
 information.) The following examples will illustrate how this works.
 If you type


 then that means, "Evaluate the function [name(%#)] and insert the _evaluated_ 
 result into the +mail message." Thus your name, at the time you write the 
 message, will be literally inserted into the text. Alternatively,


 means, "Insert the function [name(%#)] into the text and evaluate it whenever 
 the message is read." So the name of the person reading the message will 
 appear whenever someone reads the message.

 Finally, contrast the previous two examples with


 which means, "Insert the _escaped_ function [name(%#)] into the message text, 
 and therefore print it out literally without evaluating it when the 
 message is read."

 To sum it all up, if your name is Foo and you type the three commands 
 above to write the text of a message and then send it to Bar, then when 
 Bar reads the message, (s)he will see:

 Message ID #: 123456
 FROM: Foo
 TO: Bar
 Foo Bar [name(%#)]
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