No biggie, but this burned me briefly.. The documentation page is where i was looking for the standard textbox (I couldn't remember the exact syntax)
I switched from the Scala to Python in the example block, copied & pasted and got an error
<console>:26: error: value textbox is not a member of org.apache.zeppelin.spark.ZeppelinContext
Then i looked back at the documentation page and saw that there is an image with the code working. The image has z.input, but the code for copy/paste has z.textbox.
Once I changed to z.input, everything worked great. I just wanted to report this issue so the next person doesn't get momentarily confused by this discrepancy between the image of the code that works and the code that is available for copy/paste that is incorrect.