Feature summary (what you would like to be able to do and where):
After fixing syntax issues in the editor, refresh the preview using a shortcut to check for any remaining rendering issues.

Use case(s) (list the steps that you performed to discover that problem, and describe the actual underlying problem which you want to solve. Do not describe only a solution):
1.) Load page from maintenance category like Category:Pages using Information template with parsing errors (automatically after start / skip / save)
2.) Search for syntax issue in editor pane, and fix it.
3.) Check the preview for for any remaining rendering issues <== this step requires switching from keyboard to mouse, since there's no shortcut to refresh the preview. Hitting "F5" ("Re-Parse") yields the diff view which doesn't help, since i know what i've modified but i don't know if there are any more rendering / syntax issues.

Benefits (why should this be implemented?):
Switching from keyboard to mouse, navigating from editor pane to button panel and hitting "Preview" slows down repetitive maintenance tasks