A text run identifies a segment of text content with formatting style that does not change for the entire run. In other words, text runs are separated by differences in formatting. However, runs are also separated by tabulators and line-ends, which means that any multi-line text will have number of runs equal or higher than the number of lines even if the text itself has uniform formatting throughout.

A collection of text runs can be obtained from a [!:Autodesk::Revit::DB::TextNode] by calling [!:Autodesk::Revit::DB::TextNode::GetTextRuns] . See also: [!:Autodesk::Revit::DB::IModelExportContext::OnText] for more details about text output during custom exports.