This page of dotCover options summarizes general settings of the dotCover environment.
Show managed memory usage in status bar
If this check box is selected, the amount of managed memory used by the whole process is shown in the rightmost position of the status bar. This value indicates not only the amount of managed memory used by ReSharper but also the amount of managed memory used by other third-party plug-ins and Visual Studio itself.
Show 'Report error' dialog...
If dotCover encounters an internal exception, by default it shows a notification in the status bar but does not interrupt your work (if it is still possible). You can click the notification icon later to review exception details and submit them to JetBrains in a modal dialog.
Application icons theme
These radio buttons help switching between different sets of dotCover UI icons. You can leave the default option of automatic selection or choose an icon set that will be most comfortable for you for the selected Visual Studio theme.
Source code symbol icons theme
These radio buttons help switching between different sets of code symbol icons. You can leave the default option of automatic selection or choose an icon set that will be most comfortable for you for the selected Visual Studio theme.
Store solution caches in
dotCover caches a lot of its temporary data. If you do not share the solution, you can choose solution folder. If you share your solution using a VCS, it is better to choose the system temp folder so that dotCover gets them out of the solution folder and therefore out of the way of your VCS. It is recommended to choose a custom folder. The problem with the 'User local settings folder' (%LOCALAPPDATA%) is that Visual Studio's directory watcher could be triggered when ReSharper writes to this folder, which happens very often.
Clears the cache of the current solution.