unset(3Tcl)

NAME
     unset - Delete variables

SYNOPSIS
     unset name ?name name ...?


DESCRIPTION
     This command removes one or more variables.  Each name is a variable
     name, specified in any of the ways acceptable to the set command.  If a
     name refers to an element of an array then that element is removed
     without affecting the rest of the array.  If a name consists of an array
     name with no parenthesized index, then the entire array is deleted.  The
     unset command returns an empty string as result.  An error occurs if any
     of the variables doesn't exist, and any variables after the non-existent
     one are not deleted.


KEYWORDS
     remove, variable