8.4

Knowing this, the best practice when creating fields is that they have, at the very least, a 7mm margin on
each size of the actual area you want to capture from. For example, an effective 30mm wide pattern will
actually be 44mm wide using these margins. The margin should be for both the vertical size and the
horizontal size.
Distance between patterns
In implementations where a lot of patterns need to be close together (a questionnaire, multiple choice
question, checkmarks, etc) it is important to understand the risk of then pen writing across multiple fields on
the paper. People using the pen may, for example, make a very broad checkmark which would bleed over to