Aspose::Cells::Drawing::Equations::GroupCharacterEquationNode::GetGroupChr method. Specifies a symbol(default U+23DF). It is strongly recommended to use attribute ChrType to set accent character. Use this property setting if you cannot find the character you need in a known type in C++....be noted that this property only accepts one character, and if...multiple characters are passed in, only the first character is accepted...