Occasionally I would need to know which {dynamicVariablePlaceholder} was accessible to me for EM code or possibly for TWIG based code. I would include one line in a template file and then on the preview of the survey could see every possible value such as {TOKEN} or {SURVEYID}. I see pages in the manual that reference these variables but I am still trying to recall what line of code I used to display this in the page when developing. Thanks!
found it:
If you want to see what is availabe in aSurveyInfo, turn debug mode on in application/config.php, and copy the following line to the end of the <body> element below:
{{ dump(aSurveyInfo) }}