The McMahon Line was a thick red-line drawn on a double-page map, hence it is inaccurate and susceptible to alternate interpretations and disputes. As proper follow-up protocols that should have used cartographic techniques to identify the location of the agreed line on the ground through a joint survey were not taken up, the line remained inexact, leaving scope for controversial claims. The Indian maps showed it as a dashed/broken-line till 1954 to indicate it was roughly defined but not yet demarcated, that is, marked on the ground consequent to a ground survey. However, after July 1954,
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