deletions | additions       diff --git a/Extracting Data From Figures.md b/Extracting Data From Figures.md  index 778cdf9..657f69a 100644  --- a/Extracting Data From Figures.md  +++ b/Extracting Data From Figures.md 
...
4. click on the points.     Some software programs automatically recognize lines or points. I am However, since points are  usually after points, and in practice sought after,  the results are often too inconsistent to be helpful even with 100s of points. I have not Also, no program has yet been  found one that distinguishes to be able to distinguish  different symbols. This feature could be worth the trouble for digitizing lines, but this is not commonly required. The program returns each point as an x-y matrix.