Dear list, https://wiki.contextgarden.net/Greek#Monotonic_and_Acute_Accent includes two samples that should display the difference betweeen the monotonic accent and the polytonic acute accent (which generate two different characters for each such accented vowel). Excluding other implications, these are two different characters. In some fonts each pair of different characters for each accented letter lead to the same glyph, in other fonts those glyphs are different. This sample shows the difference (there should display two slightly different accents [unless there is some character normalization on the way]): \definefontfamily[mainface][rm][EBGaramond] \setupbodyfont[mainface, 500pt] \definecolor [tred] [r=1,t=.5,a=1] \definecolor [tblue] [b=1,t=.25,a=1] \starttext \startTEXpage[offset=1ex] \startoverlay {\color[tred]{Ά}} {\color[tblue]{Ά}} \stopoverlay \stopTEXpage \stoptext The problem that I have is tricky. Thanks to character normalization (at least in Firefox), searching for "á" will also find "a" (unless “Match diacritics” is enabled). I’m afraid the wiki is performing some character normalization, which renders samples in https://wiki.contextgarden.net/Greek#Monotonic_and_Acute_Accent useless. Searching for "Ά" in https://wiki.contextgarden.net/Greek should give not more than 4 matches (not case-sensitive and with “Match diacritics” [or similar filter for your browser] enabled). I‘m afraid I get none. While editing the article searching for "Ά" (case-insensitive and not normalizing characters), gave me 4 matches, but only in the source (no ocurrence was found in the preview). Once changes are saved, "Ά" occurrences dissapear (since they seem to be normalized). Sure, they may be a workaround to type codepoints instead of characters (such as with \utfchar{0x1fbb}, but wouln’t it be possible to disable that character normalization in the wiki? Many thanks for your help, Pablo