Page header running header or running headline, is a header that appears on each standard page. Running heads do not usually appear on display pages such as title pages, or on other front or back matter. Running heads in a book typically consist of the title on the left-hand (verso) page, and the chapter title on the right-hand (recto) page; or the chapter title on the verso and subsection title/subhead on the recto, aiding the reader's navigation by showing what content exists within the two-page spread at hand. A special case of the latter is in dictionaries, whose running heads are called
Numbered street the capital city. Havana has even-numbered streets running north–south, and odd-numbered streets running east–west on the west side of the city, with lettered streets from A through P running north–south beginning on the east side of Paseo Avenue. Some streets are named with a number followed by a letter (23 B Street). A notable European example is the city center of Mannheim where blocks are numbered in a grid-like system since 1811, and streets actually do not have names anymore—for example the houses in "street" B7 are those in the block in grid B7. The houses on the other side