redhat man page for lindex

lindex(n)						       Tcl Built-In Commands							 lindex(n)

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NAME
       lindex - Retrieve an element from a list

SYNOPSIS
       lindex list index
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DESCRIPTION
       This command treats list as a Tcl list and returns the index'th element from it (0 refers to the first element of the list).  In extracting
       the element, lindex observes the same rules concerning braces and quotes and backslashes as the Tcl command interpreter; however,  variable
       substitution and command substitution do not occur.  If index is negative or greater than or equal to the number of elements in value, then
       an empty string is returned.  If index has the value end, it refers to the last element in the list, and end-integer  refers  to  the  last
       element in the list minus the specified integer offset.

SEE ALSO
       list(n), lappend(n), linsert(n), llength(n), lsearch(n), lsort(n), lrange(n), lreplace(n)

KEYWORDS
       element, index, list

Tcl									8.2								 lindex(n)