How the headers are sorted
A card heading can be both a word and a phrase. There can be any number of spaced between the words forming a phrase. However, there will be only one space displayed when it comes to displaying a card. A space between words is accounted for when sorting the Word List.
A single card can have several headers. If you'd like a card to have several headers, type all the headers first (each heading must begin a line), then the card body according to the technique described above. All headers are shown in the overall Word List (each heading in its own place in alphabetical order); click anyone and the card body will be displayed.
The overall Word List can display words in different languages at the same time; both card and subentry headers are displayed. Each language's words are sorted according to "natural" dictionary order (i.e. alphabetical); all cyrillic letters are considered to follow all latin (x,y,z,а,б etc.).
Certain non-letter characters are also accounted for when sorting. Among these are colon, -, . (fullstop), ' (apostrophe), _, / (slash) etc.
You can use brackets in the heading to mark its alternative part, braces – to mark its unsorted part. It is impossible to use square brackets ([ ... ]) in the header.
Double braces mark a comment excluded from the dictionary text.
The use of #, @,<,> is disallowed; also forbidden are ~, ^ (you can use them in subentry headers, though).
Back slash (\) can be used before any symbol in the card.
If back slash is used before a symbol in the card it means that this symbol is
used as a text symbol, not as a special symbol. In this case back slash will not
be seen in the card.
If you want back slash to be seen in the card put double-black slash (\\).
You can not use #,@ symbols in card headings (except subcard headings).
You can not use ~, ^ symbols in the first heading of a card. But you can use them in other headings, e.g.:
card
green ~
For details see:
Alternative (non-obligatory) heading section