Editing Portable Game Notation (section)

=== Notes on tables ===
# Some of the symbols are not rendered by some browsers
# The more exotic symbols used by Chess Informator<ref name="cisymbols" /> are often derived from common [[Mathematical operators and symbols in Unicode|mathematical typographic symbols]]; their mathematical meaning rarely has any relevance to their chess meaning
# The entries in the Unicode column are, respectively, the decimal and hexadecimal reference for the character or symbol
# The entries in the HTML column are named [[HTML entities]] for representing the symbol or character; the Unicode numeric value can always be used where a specific entity does not exist. For example, the ''left right double arrow'' ($239) can be represented as either Unicode decimal '''&amp;#8660;''' (⇔) or Unicode hexadecimal '''&amp;#x21D4;''' (⇔) or HTML '''&amp;hArr;''' (⇔). Unless explicitly noted, the Unicode representation can be interpreted as a default.