The carapace encloses two branchial chambers which enclose the gills. They usually enclose a bay to form a lagoon. Lower ribs can also enclose ventral and lateral walls. Each follicle consists of two horizontal valves that tightly enclose the seeds. To separate strings from code, most languages enclose them by single or double quotes. A pair of parentheses must always enclose a pair of "wff"s. Note the use of the double quote to enclose each field. Some clients enclose filenames with spaces in double quotes. Moreover, they may enclose counties or other cities. They enclose the fruit tightly, without becoming connate to it. This surface may be any shape, but it must fully enclose the source. Tall eucalyptus trees further enclose the cemetery. Empty elements may enclose no content, for instance, the tag or the inline tag. In each case, the grid lines enclose one square kilometre. He used to enclose some sketches with the letters.