After an all-night vote-a-rama on Wednesday, the Senate took its first real legislative tugs at unraveling the Affordable Care Act—the health care law that currently provides insurance to more than 20 million people who didn’t have it before. Passing early Thursday with a vote of 51 to 48, and followed up by a 227-198 vote in the House on Friday, the budget resolution is the opening move in a three-part process to repeal and replace Obamacare. It is not, as some congressional Republicans would lead you to believe, now a done deal. A full-blown repeal is still far from over, with many opportunities to fizzle out or get derailed in the process.

But with Republicans using a budgetary loophole to finally get the repeal they’ve always wanted, it can be hard to know exactly where things stand. So here’s a quick guide to how the repeal process is going to go down. Probably.

Step 1: Budget Resolution

This is what the Senate voted on Thursday, and the House on Friday. It’s not a special piece of legislation: Congress passes a budget resolution every year. Because it’s not a law, it’s not something the President has to sign; it’s just a road map for how much the federal government should spend in the upcoming year. But this year’s is a little different. Written into the resolution is a section called a “reconciliation directive,” which instructs the four committees that oversee the federal health care program (two in the House and two in the Senate) to draw up a plan for reducing its toll on the federal budget deficit, i.e. how to stop paying for Obamacare.

Why, you might ask? Because while Republicans face an uphill battle to pass a law that makes significant, non-spending related changes to our nation’s health care system (that kind of bill would be subject to a Democratic filibuster, which would take 60 votes to overcome, while Republicans only have 52 Senate seats), they can instead just cut federal spending for the program with only 51 votes, using a budget reconciliation. And what’s the first step to budget reconciliation? Budget resolution.

That’s where they are now. With both houses of Congress passing the budget resolution with language on how to lower the deficit via defunding Obamacare, it sends these reconciliation directives to the committees of jurisdiction to start drafting the language of a repeal bill. So while the House and Senate votes don’t immediately change anything, the important thing is they ensure that any repeal bill those committees write in the future will be immune to a filibuster, if and when it is completed.

Step 2: Budget Reconciliation

So when might that be? The current deadline is January 27, after amendments to delay this process were withdrawn Wednesday night, but it’s not an enforceable (nor a realistic) due date. In all likelihood, discussion over what parts of Obamacare should be cut will take longer than a few weeks. And again, we’re only talking about parts of the law that involve the federal budget. First on the chopping block will likely be the individual mandate and the expansion of Medicaid. But things like parental insurance coverage up to the age of 26 can’t be touched yet. That’s step three.

Before that can happen though, the committees have to send their plans to the budget committee, which will combine them into one big proposal—the budget reconciliation. This will then go up for a vote in both houses of Congress. If the Senate gets its 51 votes and the House gets its simple majority, the reconciliation will pass. Only then will the parts of Obamacare detailed within be repealed. The rest of it will have to be disassembled, possibly piecemeal, with bipartisan support.

Step 3: The Still-to-Be-Announced Plan to Replace

A few weeks ago, this is where the Republican plan stopped. Their goal was to repeal Obamacare by the time President-elect Donald Trump took his oath of office on January 20, and deal with the replace part later. But concerns over the chaos that a “repeal and delay” situation might set loose on the insurance marketplace have pressured congressional leadership to revise their timeline. House Speaker Paul Ryan said Tuesday that “it is our goal to bring it all together concurrently,” though he also admitted Republicans have yet to agree on the specifics of their alternative.

But while top Republicans continue to shy away from presenting a concrete replacement plan, President-elect Donald Trump seemed to announce at his press conference Wednesday that he has a plan of his own—one that he says he will be releasing as soon as his pick for Health and Human Services Secretary, Tom Price, is confirmed by the Senate. Price’s first hearings could happen as soon as January 18. While Trump appeared to suggest the plan would come from his administration, and not Congress, a transition spokesman later told CNN that he couldn’t confirm this.

Trump was unequivocal that an ACA replacement would happen simultaneously, “probably the same day, could be the same hour,” as a repeal. But with no power to force Democrats to give a replacement bill the 60 votes it would need to pass, it’s unclear how the President-elect can possibly uphold this guarantee. Technically, his only formal role in the process will be to sign (or veto) whatever makes it through Congress and onto his desk. And while Trump has historically not been one to get hung up on technicalities, if the Democrats fight back as hard as they’ve promised to, this may be his first lesson in Separation of Powers 101.

Editor's Note 16:20 Eastern: This story has been updated with the results of a House vote on Friday.