Is there any way to code multiple lines in a twig file? Instead of using:
{% ... %}
{% ... %}
{% ... %} 

For each line, i'd like to know if there is a way to do something like:
{%

...
...
...

%}
You can't execute multiple statements inside of a single {% %} block.
You can have a single statement that is multi-line.
See here for more info: https://stackoverflow.com/questions/31111516/does-twig-support-executing-multiple-statements-inside-a-single-block