This page of ReSharper options allows you to adjust how the ReSharper's features appear in the editor.
Highlight current line
Select this checkbox to allow the current line to be highlighted as you work with the code.
You can set the color of the highlight in the Visual Studio options, by choosing ReSharper Current Line display item.and adjusting options for the
Highlight matching delimiters
When this checkbox is selected, any closing delimiter (bracket, brace, parenthesis or quote) is highlighted when the caret is:
You can also use the Highlight with radio buttons to choose one of two ways to highlight matching brackets and quotes: with color or with slightly less distinguishable outlines.
For more information, see Highlight matching delimiters.
Enable action bar...
Shows or hides the Action bar.
Action indicator appearance
You can choose the way action indicators appears in the editor.
The radio buttons allow choosing how to display the marker bar.
Markers width (only available since Visual Studio 2013)
These radio buttons allow choosing relative width of the markers on the marker bar. They only apply when the Integrate into enhanced scroll bar (since Visual Studio 2013) option is selected.
Show gutter navigation marks for implemented and overridden members
When a type or a member has inheritors in the current solution, you can see it by the presence of a special icon (for example, ) that appears to the left of the declaration. You can click the icon to expand the list of derived symbols and navigate.
To detect inheritors of members on the fly and to display the corresponding gutter mark, ReSharper has to perform some calculations. Large inheritance hierarchies with the combination of weak hardware could lead to some performance degradation. If this is the case, you can clear this checkbox to avoid complex calculations and thus improve performance.
On the other hand, on-the-fly calculation of type inheritors is much cheaper performance-wise and therefore is not disabled.
If you choose to disable the gutter marks, you can always use explicit navigation commands — Go to Derived Symbols Alt+Control+B and Go to Implementation Control+Shift+Alt+B — to study derived members, or visually explore full inheritance hierarchy of the current member.
C++, C, HLSL
Show gutter navigation marks
Highlight usages of the element under cursor
Select this option to automatically highlight usages of the element under the caret as you move through your code. Since this feature is also provided by Visual Studio’s IntelliSense, ReSharper’s highlighting is turned off by default.