andresy/torch — pull request #145 by Atcold (2013-06-14 00:38:18+00:00)
Title: Update index.dok

Added
```
Use an empty string (2 apostophes in a row) if you want to keep the current value.
```
for keeping the current value of `{xmin,xmax,ymin,ymax}` in `gnuplot.axis` documentation. Actually, I don't know how to write the `''`, since these are a command in the documentation..