TCL_CreateSlave - Create a TCL slave interpreter
This routine allows to create a TCL slave interpreter.
TCL_CreateSlave('TCLinterp')
TCL_SetVar('a','r','TCLinterp')
TCL_ExistVar('a','TCLinterp')
TCL_ExistVar('a')
TCL_DeleteInterp('TCLinterp')
TCL_SetVar, TCL_ExistVar, TCL_DeleteInterp,
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