How literal is this phrase?

Sample examples at http://tinyurl.com/is-it-lit

fine line:

Definitions:

  1. # A difference, albeit vague and difficult to discern.

Examples:

  1. particular aircraft . I also have to define the control surfaces , probably with ' fine line decals ' . The small size of my models means that some components have to
  2. Filter which reduces the moiré effect you sometimes get when watching a picture that contains fine lines or patterns . Exceptionally Smooth Images The Acuity Core brings other advantages . Standard 100
  3. it recently and have found it very useful for my work . It holds a finer line than other water-based resists I 've tried and does not break down with several applications
  4. election of my lifetime . The day before the election , I also trod the fine line of death . And that had a great impact on my life philosophy and my
  5. of shadowy nightmare spill over into the realistically captured world of the everyday . The fine line between the known and unknown , real and fantastic , is emphasized by the director

Note: Please select the answers below carefully based on the definition which occurs frequently in the examples

Step 1: score of 0-5 for how literal is the use of "fine" in the phrase "fine line"
0 1 2 3 4 5

Please provide any comments in case you want to tell us about your judgement or any other queries/suggestions! Not Mandatory but helpful.