is an option for fractions and grids that controls whether certain operators, such as , , and , always appear smaller than normal size.
- A fraction can be created using or Insert ▶ Typesetting ▶ Fraction.
- Certain formatting constructs change the level, or ScriptLevel, at which a selection is displayed. For example, occurs at the second level of and has ScriptLevel->2. By default, fractions also increment the ScriptLevel of the numerator and denominator; for example, each character in has ScriptLevel->2. By default, grids also increment the ScriptLevel of their elements; for example, each character in has ScriptLevel->2.
- With the default setting AllowScriptLevelChange->True, ScriptLevel is incremented by 1 for the numerator and denominator for each entry in a grid. This means that operators affected by LimitsPositioning appear smaller than normal size, as shown here.
- With the setting AllowScriptLevelChange->False, ScriptLevel is not incremented for the numerator and denominator and grid entries; in other words, ScriptLevel for a selected part has the same value as it would outside the fraction or grid. With this setting, subexpressions within a fraction or grid can have a ScriptLevel of 0, which allows operators such as , , and to appear at their normal size and formatting, as shown here.
- For a selected fraction or grid, AllowScriptLevelChange is set as an option for FractionBox or GridBox and applies only to the selection.
- At the cell level, AllowScriptLevelChange is set as a suboption of the FractionBoxOptions or GridBoxOptions option for cells. It specifies the default setting of AllowScriptLevelChange for any fraction or grid in the cell.
Wolfram Research (2000), AllowScriptLevelChange, Wolfram Language function, https://reference.wolfram.com/language/ref/AllowScriptLevelChange.html.
Wolfram Language. 2000. "AllowScriptLevelChange." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/AllowScriptLevelChange.html.
Wolfram Language. (2000). AllowScriptLevelChange. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/AllowScriptLevelChange.html