Anki

Files location

Flatpak version

~/.var/app/net.ankiweb.Anki/data/Anki2/User 1/collection.media/

Unsorted

Due now or later

"deck:中文::Phrases (Overdue)" prop:due>=0

Buried cards

deck:中文::Overdue is:buried

Some tag

deck:中文::Vocabulaire tag:leech

Specific field

deck:中文::Vocabulaire Hanzi:但是

All cards in a deck whose field contains a pattern

deck:中文::Vocabulaire Hanzi:*心*

Combine search tokens

The default seems to be AND.

deck:中文::Overdue prop:due>=0 OR deck:中文::Overdue is:buried

Search in Vocabulaire things that are neither version 1.0, nor version 1.1:

deck:中文::Vocabulaire -tag:中文::version::1.0 -tag:中文::version::1.1

Search a certain tag in a certain deck: 

deck:中文::Vocabulaire::vers10 tag:中文::version::1.1

Doc: https://docs.ankiweb.net/searching.html

Filed Replacements

answer

The 'id=answer' part tells Anki where the divider is between the question and the answer. This allows Anki to automatically scroll to the spot where the answer starts when you press 'show answer' on a long card (especially useful on mobile devices with small screens). If you don’t want a horizontal line at the beginning of the answer, you can use another HTML element such as a paragraph or div instead.

https://docs.ankiweb.net/templates/fields.html#basic-replacements

conditional hide or show

This text is always shown.

{{#FieldName}}
    This text is only shown if FieldName has text in it
{{/FieldName}}

{{^FieldName}}
    This text is only shown if FieldName is empty
{{/FieldName}}

https://docs.ankiweb.net/templates/generation.html

Strikethrough

Go to the field, edit HTML, and enter:
<del> .... text .... </del>

Hide shit

Add into styling of the cards:

.V {opacity:0 ;  line-height:0 ;}
.V:hover {opacity:1 ; line-height:inherit ;}

And surround what you want to hide and show when hovering:

<div class="V">whatever</div>
<span class="V">whatever</span>
<span class="V">

Strikethrough tag in HTML

<s>