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 NAME     
 SYNOPSIS     
 |  |  |  | size[4] Rerror tag[2] ename[s] 
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 DESCRIPTION     
 |  |  |  | The Rerror message (there is no Terror) is used to return an error
    string describing the failure of a transaction. It replaces the
    corresponding reply message that would accompany a successful
    call; its tag is that of the failing request. 
    
    
    By convention, clients may truncate error messages after ERRMAX−1
    bytes; ERRMAX is defined in <libc.h>. 
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