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- foreach varname list body
- In this command, varname is the name of a variable,
- list is a list of values to assign to varname, and body
- is a collection of Tcl commands. For each field in
- list (in order from left to right), foreach assigns the
- contents of the field to varname (as if the lindex
- command had been used to extract the field), then calls
- the Tcl interpreter to execute body. The break and
- continue statements may be invoked inside body, with
- the same effect as in the for command. Foreach an
- empty string.
-