Why use them?
This evening, when I was writing a post about an ImageMagick command that I’ve learnt, I used the unit “pixel” to describe the dimensions of an image.1 In a measurement, the quantity and the unit should be separated by a non-breaking space for the sake of readability.2
To illustrate the effect of a non-breaking space, I’ll use some screenshots.
With non-breaking space
Without non-breaking space
How to use them?
The external URL of this linklog has a link to a Wikipedia page which is cited in footnote 2. From the table in the section “Keyboard entry methods”, I can directly insert the non-breaking space character using Linux compose key.4
Non-breaking space. (2014, September 4). In Wikipedia, The Free Encyclopedia. Retrieved 11:13, September 14, 2014, from http://en.wikipedia.org/w/index.php?title=Non-breaking_space&oldid=624117646#Non-breaking_behavior ↩