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OS X uses certain special characters to describe the modifier keys required for keyboard shortcuts. When you write about such shortcuts, you may want to include these characters in your text, so you can write ⇧⌘S instead of shift-command-S...

When you divide 10 by 3, you get 3.33333… with an infinite number of digits after the decimal point. The article also describes two common notations: dot and bar above the repeating digits.

Now and then, PopChar users ask how PopChar can help them with inserting musical symbols in documents...

Sometimes, you may need to put a horizontal bar over a letter, for example, to express “the average mean of x”...

Unicode 13 defines 143,859 characters for text in many languages, emojis, and special symbols for many areas from Alchemy, Astrology, Mathematics, Meteorology to Yijing Hexagrams. Wouldn't it be great to have a single font that contains all these characters...

Most word processors have an option to automatically hyphenate words that do not completely fit at the end of a line. Automatic hyphenation takes care of situations where the position of words move within paragraphs as the result of editing operations. If needed, Word processor applications therefore use sophisticated algorithms or built-in hyphenation tables to find where a word can be split...

If you want to find out whether a certain character has a keyboard equivalent or not, you can select that character in PopChar and look at the information in the magnifier view.