IP packet bit indicating it should not be fragmented The remote host will return ICMP notifications if the packet had to be split anyway, and these are used in MTU discovery
Dedicated File: the intermediate level of a card's file structure DFs can hold data, EFs or other DFs
Double-faced section Can be a low countertop type of range (as are often found in reference areas) or the more traditional tall ranges, which average about 90" high The tall df sections average 14 shelves (7 per side)
Default settings diagram; used in conjunction with prototyping to define the standard appearance of alphanumeric screen forms See ASF