View the original community article here
Last tested: Jan 21, 2019
Yes! Source though it may be less confusing if move one of the conditions into a new field like a yesno:
{% if template == "index" or template == "page" %}
{% assign correct_template = true %}
{% endif %}
{% if correct_template and settings.slideshow_enabled %}
<div class="container main content">...</div>
{% endif %}
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