Purpose: for users and developers to list error messages they encounter in Tcl and for others to explain some of the possible causes (and solutions) for these msgs. See also [Common Tcl Error Messages and Possible Explanations] .

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Some common errors:

   1. X server insecure (must use xauth-style authorization)

Tk requires you to have a secure X server before you can use the send command. See http://ce-toolkit.crd.ge.com/tkxauth/ for instructions on how to make your server secure.