lappend

lappend <list name> <new list or element> <new list or element> ...

This function appends Efinity Tcl objects to a collection. It modifies the <list name> collection and returns the modified object.

# Append $ff_list to the end of $lut_list
set lut_list [get_cells LUT*]
set ff_list [get_cells *~FF]
lappend lut_list $ff_list

# Append a single Efinity Tcl object to the end of $lut_list
lappend lut_list [get_cells cell1]