Hi Klaus,
there is currently no built in way to preview markdown in WEBCON, although you could use external libraries and write really small amount of javascript, to have really nice experience.
I've prepared a sample application on WEBCON demo server here:
* Sample markdown document: https://portal.webconbps.com/db/1/app/548/element/6757/form - you will need to add a space, and exit the text field to render markdown.
* Start new document: https://portal.webconbps.com/db/1/app/548/start/wf/757/dt/755/form?def_comid=1
Whole configuration is rather simple - it uses showdown.js* library to make a conversion - this is loaded using a cdn, and on change of value in markdown field I'm just converting it to html.
Screenshots in attachments, although you should be able to check the configuration directly through connecting to designer studio downloaded from demo page :)
Three attributes:
* Library load - this contains script tag to get showdown.js from a cdn.
* Markdown - this is regular multiline text field without formatting - you can type in here raw markdown
* Preview - it's just a anchor, which i can grab and replace it's content with generated html from markdown
It should be possible to add some event listener so each typed key will refresh the preview, but it's a quick example to work on if that idea looks good for you.
Of course you could also save that generated markdown into a webcon field, which i'm not doing in this example.
* https://showdownjs.com/