2.6.14 Defining the process that will be executing the last command in a pipe (UNIX only)
To define whether the last command in a pipe is to be executed by the current process or another process, specify the PIPE_CMD_LAST environment setting parameter as follows:
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CURRENT: Executes in the current process.
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OTHER: Executes in another process.
If the PIPE_CMD_LAST parameter is omitted, CURRENT is assumed.