This template's initial visibility currently defaults to autocollapse, meaning that if there is another collapsible item on the page (a navbox, sidebar, or table with the collapsible attribute), it is hidden apart from its title bar; if not, it is fully visible.

To change this template's initial visibility, the |state= parameter may be used:

• {{Underwater diving|state=collapsed}} will show the template collapsed, i.e. hidden apart from its title bar.
• {{Underwater diving|state=expanded}} will show the template expanded, i.e. fully visible.

This is a very large navbox and should autocollapse other than in exceptional cicumstances. The unnamed parameter should be set to expand the collapsible group in which the topic af the article is listed. If it is listed in more than one group, use the most generally applicable. If in doubt, ask at Wikipedia talk:WikiProject Underwater diving.

The template has an unnamed parameter to display the relevant section for the article. Only one section will open, if the article is linked from more than one subgroup, choose the most relevant. The abbreviations used can be viewed in the template code, and are listed here for easy reference, but may be out of date. The parameter follows a pipe in the template, eg. {{Underwater diving|divequ}}.

Navbov collapsible group title	Abbreviation
Diving equipment	divequ
Diving support equipment	divsup
Freediving	frediv
Professional diving	prodiv
Recreational diving	recdiv
Diving safety	divsaf
Diving medicine	divmed
Law	divlaw
History of underwater diving	hisdiv
Publications	divpub
Training and registration	trareg
Underwater sports	undspo
Underwater divers	unddiv
Science of underwater diving	scidiv
Other	other