Preformatted elements in HTML are displayed with
text in a fixed width font, and so are suitable for text which
has been formatted for a teletype by some existing formatting
The optional attribute is:
- This attribute gives the maximum number of characters which
will occur on a line. It allows the presentation system to select
a suitable font and indentation. Where the WIDTH attribute is
not recognized, it is recommended that a width of 80 be assumed.
Where WIDTH is supported, it is recommended that at least widths
of 40, 80 and 132 characters be presented optimally,
with other widths being rounded up.
Within a PRE element,
- Line boundaries within the text are rendered as a move to
the beginning of the next line, except for one immediately following
or immediately preceding a tag.
- The <p> tag should not be used.
If found, it should be rendered as a move to the beginning of
the next line.
- Anchor elements and character highlighting elements may be
- Elements which define paragraph formatting (Headings,
Address, etc) must not be used.
- The ASCII Horizontal Tab (HT) character must be interpreted
as the smallest positive nonzero number of spaces which will
leave the number of characters so far on the line as a multiple
of 8. Its use is not recommended however.
Example of use
This is an example line
Within a preformatted element, the constraint that the rendering
must be on a fixed horizontal character pitch may limit or prevent
the ability of the renderer to render highlighting elements specially.
The above references to the "beginning of a new line" must
not be taken as implying that the renderer is forbidden from
using a (constant) left indent for rendering preformatted text.
The left indent may of course be constrained by the width required.