lappend varName ?value value ...?

Appends each ''value'' to the end of the list stored in ''varName''. (From the Tcl/Tk Reference Guide)

''lappend'' is the only list-command which requires the '''name''' of the list rather than the list itself.

 lappend listName
rather than
 lappend $listName

This command differs from [append] in that values are appended as list elements rather than raw text.

lappend will not ''make'' varName a list ; if it is one before the command, it will continue to be one.

You do not need to assign the results of lappend to varName; lappend
modifies varName directly.


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