Whenever we write codes we may need to comment some codes to avoid displaying and executing the line.we need two ways of commenting , they are single line commenting and multi line commenting.
Single line commenting
Single line commenting is used to comment a line of code .
Syntax
{# Commented code #}
Example
{# <h3>{{ heading_title }}</h3> #}
Multi line commenting
Multi line commenting is used to comment a part of codes or multiple lines of codes. the syntax and way of commenting is same as of single line commenting for the multi line commenting.
Syntax
{# Commented code #}
Example
{#
{% if product %}
<span>{{ product.title }}</span>
{% endif %}
#}