text: #ifndef _PLV_IMAGE_CMDS_
  #define _PLV_IMAGE_CMDS_
  
  #include <tk.h>
  
  int PlvWriteIrisCmd(ClientData clientData, Tcl_Interp *interp,
  		    int argc, char *argv[]);
  int PlvCountPixelsCmd (ClientData clientData, Tcl_Interp *interp,
  		       int argc, char *argv[]);
  
  #endif // _PLV_IMAGE_CMDS_
  