In typography, a counter is an area entirely or partially enclosed by a letter form or a symbol (the counter-space/ the hole of). Letters containing closed counters include A, B, O, P, Q, R, a, b, d, g, o, p, and q. Letters containing open counters include e, s, c, h etc. The digits 0, 4, 6, 8, and 9 also possess a counter.
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| Page | Pagination · Recto and verso · Margin · Column · Canons of page construction · Pull quote |  |
| Paragraph | Widows and orphans · Leading · River · Baseline · Median · Alignment · Justification | |
| Character | Ligature · Letter-spacing · Kerning · Majuscule · Minuscule · Initial · x-height · Ascender · Descender · Diacritics · Counter · Subscript and superscript | |
| Style | Serif · Italic · Slab serif · Sans-serif · Blackletter · Script · Dingbat | |
| Punctuation | Hanging punctuation · Hyphenation · Curly quotes · En dash · Em dash | |
| Typesetting | Type design · Type foundry · Movable type · Calligraphy · Phototypesetting · Letterpress · Typeface · Font · Computer font · Point · Pica · Cicero · Agate · Em · En · Lorem ipsum · Hamburgefonts · Punchcutting · Pangram | |
| Digital typography | Font formats · Typesetting software · Character encoding · Rasterization · Hinting | |
