15.1 Glossary of Shared Terms

array — An array of mathematical elements (“e”) stacked vertically in a single math zone.

build down — The process of converting mathematical text from an implementation’s professional form to an implementation’s built-down form.

build up — The process of converting mathematical text from an implementation’s built-down form to an implementation’s professional form.

built-down form — An implementation-specific linear format that may or may not include additional rich formatting in addition to another plain-text linear format (such as TeX) or the linear format defined in Unicode Technical Note 28.

built-up form — See professional form.

control — A region of active content within an Office Open XML document.

display equation — An equation that is in display mode, and thus is part of a display math zone. (Alternative names for display equation are: “display expression”, “display formula”, and “display math”.)

display mode — When mathematical text (i.e., text in one or more oMath blocks) is contained in a display math zone (i.e., an oMathPara block), the mathematical text represented in the oMath block(s) is in display mode.

equation array — An array of equations. See array.

inline equation — An equation that is in an inline math zone. (Alternative names for inline equation are: “inline expression”, “inline formula”, and simply “inline math”.)

instance of mathematical text — A single continuous combination of mathematical text represented by a single oMath block and the OMML elements within that oMath block.

linear format — An implementation-specific plain-text 1-dimensional representation of mathematical text.

math accent — A character that is specified as acceptable for use as an accent character by ISO/IEC 29500.

math alphanumerics — Characters with specific math styles, as defined in the Unicode Standard 5.0.

math paragraph — One or more oMath elements (instances of mathematical text) that are in display mode.

math zone — An isolated region of text within which mathematical text is used and outside of which mathematical text is not used.

mathematical text — Any text meant to convey mathematical meaning through OMML.

n-ary operator — An operator that involves n terms when expanded. For instance, the following example uses the Unicode (ISO 10646) summation sign (U+2211) which has the official name “N-ARY SUMMATION”.

oMath container — An oMath block that is part of a display math zone but is not itself a math zone.

OMML — Office Math Markup Language, a Shared ML of ISO/IEC 29500.

professional form — Implementation-specific 2-D representation of mathematical text. (Also referred to as “built-up form”.)