The property renderObj defines how each record gets rendered. Therefore, it is defined as COA (Content Object Array), which can hold an arbitrary number of TypoScript objects. In this case, two TEXT objects are used, which will be rendered one after the other. Remember that the order of the rendering is not controlled by the order in TypoScript, but by the numbers with which they are defined. The TEXT object "10" will be created first and the TEXT object "20" will be rendered after it.
The challenge is to render all content elements like the web designer predetermined. Therefore, we have to create TypoScript definitions for every single database field (e.g. for images, image size, image position, link to top, index, etc.).