Templates
File → New From Template let you to create a new page choosing a template.
From Bluefish 2.2.6 on templates are no longer configured in the preferences, but are loaded from disk. You can have system-wide installed templates (on Linux in /usr/share/bluefish/templates) or user specific templates (on Linux in ~/.bluefish/templates/). Any file available in that directory will be scanned at bluefish startup, and will become available in the templates menu.