Line Break - Space

Space is a line break class that permits a line to break after the character, but not before it. It applies to characters like the regular space (U+0020) and certain other space characters, such as the non-breaking space’s cousin, the narrow no-break space, which also belongs here. These characters act as flexible break opportunities within text, meaning a line can end at that point without needing a hyphen or other forced break, while the character itself remains at the end of the line. This behavior is distinct from classes that force breaks or prohibit them entirely, allowing natural word wrapping in prose and data with minimal disruption. In practice, spaces assigned this value ensure that text flows smoothly across line boundaries, but they do not allow a break to occur immediately before the space, preserving the visual attachment of the space to the preceding word.