स कक्षातिक्रान्तः प्रदरः ॥ कZ_१०.६.०९ ॥
sa kakṣātikrāntaḥ pradaraḥ
When that (daṇḍa line) pushes beyond the flanks (kakṣa), it is called ‘Pradara’ (a central projection breaking ahead).
A forward-projecting centre can be isolated and attacked on both sides unless the wings keep pace or reserves support the salient.