instruction: On this Chapter 2 heading in this pdf file, I want to edit this pdf to highlight this heading with yellow color to make a mark to continue from here, so highlight the Chapter 2 heading with yellow color in the PDF Extra app.

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      content_description: "So that’s the situation. I’m stranded on Mars. I have no way to\r\ncommunicate with Hermes or Earth. Everyone thinks I’m dead. I’m in a\r\nHab designed to last 31 days.\r\nIf the Oxygenator breaks down, I’ll suffocate. If the Water Reclaimer\r\nbreaks down, I’ll die of thirst. If the Hab breaches, I’ll just kind of\r\nexplode. If none of those things happen, I’ll eventually run out of food\r\nand starve to death.\r\nSo yeah. I’m fucked.\r\n"
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      content_description: "Chapter 2\r\nLOG ENTRY: SOL 7\r\nOk, I’ve had a good night’s sleep, and things don’t seem as hopeless\r\nas they did yesterday.\r\nToday I took stock of supplies, and did a quick EVA to check up on\r\nthe external equipment. Here’s my situation:\r\nThe surface mission was supposed to be 31 days. For redundancy, the\r\nsupply probes had enough food to last the whole crew 56 days. That way\r\nif one or two probes had problems, we\'d still have enough food to\r\ncomplete the mission.\r\nWe were six days in when all hell broke loose, so that leaves enough\r\nfood to feed six people for 50 days. I’m just one guy, so it’ll last me 300\r\ndays. And that’s if I don’t ration it. So I’ve got a fair bit of time.\r\nThe Hab stood up to the storm without any problems. Outside, things\r\naren’t so rosy. I can’t find the satellite dish; it probably got blown\r\nkilometers away.\r\nThe MAV is gone, of course. My crewmates took it up to Hermes.\r\nThough the bottom half (the landing stage) is still there. No reason to\r\ntake that back up when weight is the enemy. It includes the landing gear,\r\nthe fuel plant, and anything else NASA figured it wouldn’t need for the\r\ntrip back up to orbit.\r\nThe MDV is on its side and there’s a breach in the hull. Looks like the\r\nstorm ripped the cowling off the reserve chute (which we didn’t have to\r\nuse on landing). Once the chute was exposed it dragged the MDV all over\r\nthe place, smashing it against every rock in the area. Not that the MDV\r\nwould be much use to me. Its thrusters can’t even lift its own weight. But\r\nit might have been valuable for parts. Might still be.\r\nBoth rovers are half-buried in sand, but they’re in good shape\r\notherwise. Their pressure seals are in-tact. Makes sense. Operating\r\nprocedure if a storm hits is to stop motion and wait for the storm to pass.\r\nThey’re made to stand up to punishment. I’ll be able to dig them out with\r\n"
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      content_description: "a day or so of work.\r\nI’ve lost communication with the weather stations, placed a kilometer\r\naway from the Hab in 4 directions. They might be in perfect working\r\norder for all I know. The Hab’s communications are so weak right now it\r\nprobably can’t even reach a kilometer.\r\nThe solar cell array was covered it in sand, rendering it useless (hint:\r\nsolar cells need sunlight to make electricity). But once I swept them off,\r\nthey returned to full efficiency. Whatever I end up doing, I’ll have plenty\r\nof power for it. 200 square meters of solar cells, with hydrogen fuel cells\r\nto store plenty of reserve. All I need to do is sweep them off every few\r\ndays.\r\nThings indoors are great, thanks to the Hab’s sturdy design.\r\nI ran a full diagnostic on the Oxygenator. Twice. It’s perfect. If\r\nanything goes wrong with it, there is a short-term spare I can use. But it’s\r\nsolely for emergency use while repairing the main one. The spare doesn’t\r\nactually pull CO2 apart and recapture the oxygen. It just absorbs the CO2\r\nthe same way the spacesuits do. It’s intended to last 5 days before it\r\nsaturates the filters, which means 30 days for me (just one person\r\nbreathing, instead of six). So there’s some insurance there.\r\nThe Water Reclaimer is working fine, too. The bad news is there’s no\r\nbackup. If it stops working, I’ll be drinking reserve water while I rig up a\r\nprimitive distillery to boil piss. Also, I’ll lose half a liter of water per day\r\nto breathing until the humidity in the Hab reaches its maximum and water\r\nstarts condensing on every surface. Then I’ll be licking the walls. Yay.\r\nAnyway, for now, no problems with the Water Reclaimer.\r\nSo yeah. Food, water, shelter all taken care of. I’m going to start\r\nrationing food right now. Meals are pretty minimal already, but I think I\r\ncan eat a 3/4 portion per meal and still be all right. That should turn my\r\n300 days of food in to 400. Foraging around the medical area, I found the\r\nmain bottle of vitamins. There’s enough multivitamins there to last years.\r\nSo I won’t have any nutritional problems (though I’ll still starve to death\r\nwhen I’m out of food, no matter how many vitamins I take).\r\nThe medical area has morphine for emergencies. And there’s enough\r\nthere for a lethal dose. I’m not going to slowly starve to death, I’ll tell\r\n"
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      content_description: "you that. If I get to that point, I’ll take an easier way out.\r\nEveryone on the mission had two specialties. I’m a botanist and\r\nmechanical engineer. Basically, I was the mission’s fix-it man who\r\nplayed with plants. The mechanical engineering might save my life if\r\nsomething breaks.\r\nI’ve been thinking about how to survive this. It’s not completely\r\nhopeless. There’ll be humans back on Mars in about four years when Ares\r\n4 arrives (assuming they didn’t cancel the program in the wake of my\r\n“death”).\r\nAres 4 will be landing at the Schiaparelli Crater, which is about\r\n3,200km away from my location here in the Acidalia Planitia. No way for\r\nme to get there on my own. But if I could communicate, I might be able\r\nto get a rescue. Not sure how they’d manage that with the resources on\r\nhand, but NASA has a lot of smart people.\r\nSo that’s my mission now. Find a way to communicate with Earth. If I\r\ncan’t manage that, find a way to communicate with Hermes when it\r\nreturns in 4 years with the Ares 4 crew.\r\nOf course, I don’t have any plan for surviving 4 years on 1 year of\r\nfood. But one thing at a time here. For now, I’m well fed and have a\r\npurpose: “Fix the damn radio”.\r\nLOG ENTRY: SOL 10\r\nWell, I’ve done three EVAs and haven’t found any hint of the\r\ncommunication dish.\r\nI dug out one of the rovers and had a good drive around, but after days\r\nof wandering I think it’s time to give up. The storm probably blew the\r\ndish far away and then erased any drag-marks or scuffs that might have\r\nled to a trail. Probably buried it, too.\r\nI spent most of today out at what’s left of the communication array.\r\nIt’s really a sorry sight. I may as well yell toward Earth for all the good\r\nthat damned thing will do me.\r\n"
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