Alexandrine introduce phrasal accentuation, or rigorously observe the medial caesura, as in French." Common usage within the literatures of European languages is broader still, embracing lines syllabic, accentual-syllabic, and (inevitably) stationed ambivalently between the two; lines of 12, 13, or even 14 syllables; lines with obligatory, predominant, and optional caesurae. Although alexandrines occurred in French verse as early as the 12th century, they were slightly looser rhythmically, and vied with the "décasyllabe" and "octosyllabe" for cultural prominence and use in various genres. "The alexandrine came into its own in the middle of the sixteenth century with the poets of the Pléiade
French alexandrine target; they also cultivated the use of ' — lines with an odd, rather than even, number of syllables. These uneven lines, though known from earlier French verse, were relatively uncommon and helped suggest a new rhythmic register. ' is the source of the English term free verse, and is effectively identical in meaning. It can be seen as a radical extension of the tendencies of both ' (various and unpredictable line lengths) and ' (weakening of strictures for caesura and rhymes, as well as experimentation with unusual line lengths). Its birth — for the reading public at least —