Formerly, grids showed which column was sorted, by using a glyph (▼) in the column heading.
What I know
In Windows 10's File Explorer, this glyph is visually less prominent and has moved to the upper edge:
I understand the principles of Modernist UI: strip away everything that isn't essential. In the case of Internet Explorer, users will know that they sorted a column, and whether it's in increasing or decreasing sort direction, so the glyph can be de-emphasized.
Why what I know isn't working
I have a design problem where multiple factors affect the sort order. I'd like to indicate that "THIS has become the sorted column" in a visible way. It is not important to me to show the direction of the sort. In my opinion (not yet tested) that a glyph in the Windows 10 style is not sufficiently prominent for users to notice.
- If you know of a standard—from any operating system—for prominently identifying the sorted column, please let me know.