[Help] What's the Best Way of Testing Sheet.json Markdown?

I noticed some of my sheet.json markdown didn't get applied properly from my initial pull and I'm working to correct this. Syntactically, it was correct markdown (e.g. #### Sub Title) and the markdown preview in Visual Studio Community showed it working, but obviously Roll20 has a different markdown interpreter. Looking through other sheet.json instructions I'm not the only one whose had this problem. Is there a Roll20 wiki page with a definitive set of usable markdown? Is there some way in Roll20 to preview the markdown as Roll20 will render it besides before making another pull request? Right now I'm just combing through sheet.json from other authors to see what's used and then changing the character sheets in Game Settings to see what's valid. Advanced thanks.

I'm not aware of any such resource, but if I had to guess, it would likely use  github flavored markdown. The other important thing to remember is that spacing is important, so when you remove all the [enter]s with \r, don't delete the spaces

GV: GitHub markdown would be a reasonable guess, but from what I had before Roll20 is not supporting headings down to h4. *shrug* Can you elaborate on the \r space thing? If I had: ...some other paragraph of text above.\r\r## Usage\rFill in the text inputs with scores and play!\rHover over text inputs for some hints. Would it be correct to expect: ...some other paragraph of text above. Usage Fill in the text inputs with scores and play! Hover over text inputs for some hints.