[Gmsh] Element size factor: undocumented option?

[Rui Maciel]

In the "Mesh" section of Gmsh's Options window, there is an option which 
is labeled "element size factor".  In Gmsh's documentation, the only 
mention of a "size factor" refers to Print.EpsPointSizeFactor, which I 
suspect has no relation with it.

The option influences the element size, which comes as no surprise due 
to its name.  Nevertheless, does anyone happen to know what this option 
actually does?


Thanks in advance,
Rui Maciel