Watch out for: Why?
graphic: pencil bullet small columns with short lines Short lines and small columns make the eye shift too quickly and can confuse the reader into reading across columns instead of down.
graphic: pencil bullet very long lines Long lines can also be hard to follow and may create a dense block of type.
graphic: pencil bullet type that is even on both sides (justified) Type that is justified on both sides often makes big spaces between words or between letters within a word. These spaces disrupt the reader’s eye movement and can be confusing.
graphic: pencil bullet hyphenated words Words that are hyphenated over two lines force the reader to remember part of the word at the same time as she may be trying to sound it out
graphic: pencil bullet type that is centred or ragged on both sides Type that is centred or ragged on both sides does not show the reader where sentences begin and end. It looks like each line is a sentence by itself.
graphic: pencil bullet graphics that are poorly chosen or presented Graphics should be easy to read and should not interrupt normal reading patterns.
The layout that is easiest to read is type that is justified (even) on the left and unjustified (ragged) on the right.
graphic: pencil bullet

graphic: pencil bullet
forms that don’t give enough space to write

forms that use complicated layout
Seniors, adult learners, and people with motor disabilities may find it difficult to fill in forms that require small writing, or writing letters in individual boxes.
graphic: pencil bullet forms that use more than one language New readers may find it difficult to distinguish between English and French, especially if they are used on alternate lines.