* \ingroup DataModel
* \brief Feature for creation of a new constraint which defines a length of a line segment
*
- * These constraint has two attributes:
+ * This constraint has two attributes:
* SketchPlugin_Constraint::VALUE() (length) and SketchPlugin_Constraint::ENTITY_A() (segment),
* SketchPlugin_Constraint::FLYOUT_VALUE_PNT() (distance of a constraints handle)
*/