Hatch patterns, 540
Headers and footers, 150–151
Help files, 23–26, 192, 814
Hierarchies, on block diagrams, 344–349
HTML (Hypertext Markup Language) files, 453–454, 671
HTTP (Hypertext Transfer Protocol), 453
HVAC services, in site plans, 586–591
Hyperlinks
creating, 160–162
icons for, 158
inserting, 240
modifying, deleting, and copying, 164–165
multiple, 172–173
navigation shapes for, 163–164
in network diagrams, 432–433
for panning and zooming, 332
relative and absolute, 159, 162–163