Syllabic verse is a poetic form having a fixed or constrained number of syllables per line, while stress, quantity, or tone play a distinctly secondary role — or no role at all — in the verse structure. It is common in languages that are syllable-timed, such as French or Finnish — as opposed to stress-timed languages such as English, in which accentual verse and accentual-syllabic verse are more common. Many European languages have significant syllabic verse traditions, notably Italian, Spanish, French, and the Baltic and Slavic languages. These traditions often permeate both folk and literary verse, and have evolved gradually over hundreds or thousands of years; in a sense the metrical tradition is older than the languages themselves, since it (like the languages) descended from Proto-Indo-European. It is often implied — but it is not true — that word stress plays no part in the syllabic prosody of these languages. Indeed in most of these languages word stress is much less prominent than it is in, say, English or German; nonetheless it is present both in the language and in the meter. Very broadly speaking, syllabic meters in these languages follow the same pattern: Line length: The line is defined by the number of syllables it contains. Hemistich length: All but the shortest lines are divided into part-lines (hemistichs); each hemistich also contains a specific number of syllables, and ends with a word-boundary (this means that the hemistich cannot end in the middle of a word). Hemistich markers: The ends of the hemistichs are marked and contrasted by an obligatory stress: a specific syllable position near the end of each hemistich must be filled by a stressed syllable, and this position typically differs between the first and second hemistich, so that they are audibly distinct. Marker reinforcement: Often the syllables immediately before or after the obligatory stresses are obligatorily unstressed to further emphasize the stress.