In an elaborate ceremony, Thailand's king has signed the country's military-backed constitution. The document paves the way for Thailand to hold elections in the coming months, but critics say it only solidifies the power of the military.Voters approved the constitution by a wide margin last August, two years after the Thai military seized power in a coup, as The Two-Way has reported. The junta has argued that this constitution was badly needed to restore stability.The new constitution "constrains further elected governments with an appointed senate, and commits governments to follow the military's 20-year development plan," according to the BBC.But this is actually a slightly different document than the one Thailand voted on. It contains six changes made at the request of new King Vajiralongkorn Bodindradebayavarangkun, who acceded after the death of his father in October.Those changes expand the power of the monarchy. For example, according to the Bangkok Post, the king may leave the country without appointing another regent. Also, it removes a requirement for the king to call a meeting with the heads of top courts and the Senate in the event of a constitutional crisis."Thailand has had so many constitutions in its modern history — this is the 20th since 1932 — that many of them were introduced with little fanfare," the BBC reports. But the extravagant ceremony requested by the king is seen as a sign of "royal approval," the broadcaster adds.The Bangkok Post describes it as an "ancient ceremony not seen in almost 50 years":