Add line iteam information on order printer app for invoice and slip

Here is you need to add on your order printer app invoice and slip template :-

 You might be using Variant Option Product Options app  or did it via custom code and you wondering how to show those option on invoice and slip .

Here is solution 

{% if property_size > 0 %}
<br>
<p>Selected option</p>
{% for p in line_item.properties %}
{% unless p.last == blank %}
<b style= "font-size: 10px;">{{ p.first }}:</b>

{% if p.last contains '/uploads/' %}
<a href="{{ p.last }}">{{ p.last | split: '/' | last }}</a>
{% else %}
<b style= "font-size: 10px;">{{ p.last }}</b>
{% endif %}

<br>
{% endunless %}
{% endfor %}
{% endif %}

If you still not understand or you facing any issue implemation this , please feel free contact me i will be implentation this solution on your store .