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От man wine

    [...]

ENVIRONMENT VARIABLES

wine  makes  the  environment variables of the shell 
from which wine is started accessible to the windows/dos processes started.
So use the appropriate syntax for your shell to enter environment variables 
you need.

       [...]

   WINEDEBUG
Turns debugging messages on or off. The syntax of the variable
is of the form [class][+/-]channel[,[class2][+/-]channel2].

  class is optional and can be one of the following: 
  err, warn, fixme, or trace.  If class is not specified, 
  all debugging messages for the specified channel are turned  on.   
  Each  channel will  print messages about a particular component of wine.  
  The following character can be either + or - to switch 
  the specified channel on or off respectively.  
  If there is no class part before it, a leading + can be omitted. 
  Note that spaces are not allowed anywhere in the string.

          Examples:

          WINEDEBUG=warn+all
                 will turn on all warning messages 
                 (recommended for debugging).

          WINEDEBUG=warn+dll,+heap
                 will turn on DLL warning messages and all heap messages.

          WINEDEBUG=fixme-all,warn+cursor,+relay
                 will turn off all FIXME messages, turn on cursor warning
                 messages, and turn on all relay messages (API calls).

          WINEDEBUG=relay
                 will turn on all relay messages. 
                 For more control on including or excluding functions 
                 and dlls from the relay trace look into the [Debug] section 
                 of the wine configuration file.

              For more information on debugging messages, 
              see the Running Wine chapter of the Wine User Guide.
[...]