@tinyspheresof @rkward Sorry for the late response. Currently, there is no such functionality in #rkward, except that one in the screenshot.
But let me tell you about an upcoming feature called “Code navigation”. It is enabled in the latest AppImage (https://cdn.kde.org/ci-builds/education/rkward/master/linux/)
It helps you to very quickly navigate the R and #RMarkdown scripts. It will address your problem directly.