I have recently started putting work into the UK Transport Wiki to try and improve it's appearance and information. One main issue I have come across is within the Infoboxes (see this one for example ), the rows don't disappear when nothing is entered; instead still show with the <<< >>> either side. Can someone advise on how to sort this please?
Now you're probably gonna say, that this is the wrong place to ask or you don't know how to do. If you do know how to do this please give me some instructions or if this is the wrong discussion to ask, please direct me to the discussion where I can get the proper instructions. Thank you.
Yes, I'm afraid it's indeed not the right place. It's generally best to create your own thread for your issue. You can go to Special:Forum and click on the respective topic (e.g. Getting Technical) to post your own thread.
To answer your question, what you're looking for is tabber. Keep in mind, though, that the use of tabbers isn't recommended due to various reasons as seen under the Issues section. I'd suggest to just stick with headings instead, but that's up to you, of course.
If you've any further questions, then go ahead and create your own thread for it! :)
Edit: Forgot to mention this! There's, however, an efficient method to separate information in infoboxes into tabs. See Help:Infoboxes#Panels. Letting you know since one of your examples is using tabber to do that.