PaperBack is a free application that allows you to back up your precious files on the ordinary paper in the form of the oversized bitmaps. If you have a good laser printer with the 600 dpi resolution, you can save up to 500,000 bytes of uncompressed data on the single A4/Letter sheet. Integrated packer allows for much better data density - up to 3,000,000+ (three megabytes) of C code per page.

You may ask - why? Why, for heaven's sake, do I need to make paper backups, if there are so many alternative possibilities like CD-R's, DVD±R's, memory sticks, flash cards, hard disks, streamer tapes, ZIP drives, network storages, magnetooptical cartridges, and even 8-inch double-sided floppy disks formatted for DEC PDP-11? (I still have some). The answer is simple: you don't. However, by looking on CD or magnetic tape, you are not able to tell whether your data is readable or not. You must insert your medium into the drive (if you have one!) and try to read it.

Paper is different. Do you remember the punched cards? EBCDIC and all this stuff. For years, cards were the main storage medium for the source code. I agree that 100K+ programs were... unhandly, but hey, only real programmers dared to write applications of this size. And used cards were good as notepads, too. Punched tapes were also common. And even the most weird codings, like CDC or EBCDIC, were readable by humans (I mean, by real programmers).

Of course, bitmaps produced by PaperBack are also human-readable (with the small help of any decent microscope). I'm joking. What you need is a scanner attached to PC. Actual version is for Windows only, but it's free and open source, and there is nothing that prevents you from porting PaperBack to Linux or Mac, and the chances are good that it still will work under Windows XXXP or Trillenium Edition. And, of course, you can mail your printouts to the recipients anywhere in the world, even if they have no Internet access or live in the countries where such access is restricted by the regiment.

Oh yes, a scanner. For 600 dpi printer you will need a scanner with at least 900 dpi physical (let me emphasize, physical, not interpolated) resolution.

Have I already mentioned that PaperBack is free? I release it under the GNU General Public License, version 3. This means that you pay nothing for the program, that the sources are freely available, and that you are allowed - in fact, encouraged - to modify and improve this application.

2. Installation.

You don't need to install PaperBack. Copy it to any directory, if possible, with unrestricted write access (to allow PaperBack to save settings to the initialization file), optionally create shortcut on the desktop - that's all.

This project is a continuation of Stack Overflow Documentation, which ended in August 2017.

The intent is to preserve that work and improve upon it.

This project is collaborative. All documentation is released under Creative Commons BY-SA license and hosted on GitHub. Please do contribute!

Guiding principles behind Essential Books

• driven by examples
• not limited in size like a traditinal book
• articles are cross-linked
• search friendly

Driven by examples

Show, don't tell.

Not limited in size

A traditional book is limited by physical size, number of pages. This limits how much information it can have.

We don't have such constraints so there's no limit to how much useful information we can add.

Documenting popular libraries, adding step-by-step tutorials for specific tasks. Everything is in scope.

Search friendly

A search bar at the top allows quick navigation to a topic of interest.

Instead of scanning table of contents, you can type the topic you're interested in.

PaperBack is a free application that allows you to back up your precious files on the ordinary paper in the form of the oversized bitmaps. If you have a good laser printer with the 600 dpi resolution, you can save up to 500,000 bytes of uncompressed data on the single A4/Letter sheet. Integrated packer allows for much better data density - up to 3,000,000+ (three megabytes) of C code per page.

You may ask - why? Why, for heaven's sake, do I need to make paper backups, if there are so many alternative possibilities like CD-R's, DVD±R's, memory sticks, flash cards, hard disks, streamer tapes, ZIP drives, network storages, magnetooptical cartridges, and even 8-inch double-sided floppy disks formatted for DEC PDP-11? (I still have some). The answer is simple: you don't. However, by looking on CD or magnetic tape, you are not able to tell whether your data is readable or not. You must insert your medium into the drive (if you have one!) and try to read it.

Paper is different. Do you remember the punched cards? EBCDIC and all this stuff. For years, cards were the main storage medium for the source code. I agree that 100K+ programs were... unhandly, but hey, only real programmers dared to write applications of this size. And used cards were good as notepads, too. Punched tapes were also common. And even the most weird codings, like CDC or EBCDIC, were readable by humans (I mean, by real programmers).

Of course, bitmaps produced by PaperBack are also human-readable (with the small help of any decent microscope). I'm joking. What you need is a scanner attached to PC. Actual version is for Windows only, but it's free and open source, and there is nothing that prevents you from porting PaperBack to Linux or Mac, and the chances are good that it still will work under Windows XXXP or Trillenium Edition. And, of course, you can mail your printouts to the recipients anywhere in the world, even if they have no Internet access or live in the countries where such access is restricted by the regiment.

Oh yes, a scanner. For 600 dpi printer you will need a scanner with at least 900 dpi physical (let me emphasize, physical, not interpolated) resolution.

Have I already mentioned that PaperBack is free? I release it under the GNU General Public License, version 3. This means that you pay nothing for the program, that the sources are freely available, and that you are allowed - in fact, encouraged - to modify and improve this application.

From sharks' livers to endangered plants – some claims about "natural" products should be interpreted with caution. Anna Turns investigates whether we should be more willing to use synthetic alternatives.

Backup Capacity Calculator
To evaluates required storage capacity enter backup configuration details

With the president fleeing, prices tripling, and the country out of power, Sri Lanka is in crisis after it banned fertilizer. //

The fuel has run out in Sri Lanka, with tuk-tuk drivers being forced to wait for days just to fill their eight-liter tanks. Power blackouts are a daily occurrence. The inflation rate in Sri Lanka reached a whopping 54.6 percent in June, and the growing cost of food, clothing, transportation, and electricity — some of which are three times the normal price — has tanked the value of the rupee. Being an island country, catching fresh fish instead of buying food would be a relief, but there’s no diesel to go out to sea to fish for them. //

The 2021 inflation surge that has grown into a full economic crisis is in no small part thanks to climate radicalism. Suckered by European Green Deal propaganda, the Sri Lankan government implemented a ban in April 2021 on the main thing propelling its agriculture-based economy: chemical fertilizer. On an island where 15 million out of its 22 million people rely on farming, over 90 percent of them had used chemical fertilizer prior to the ban, which went into effect immediately with no time for contingency planning. By the time the government realized its mistake, it was too late.

One-third of the farmlands lay dormant in 2021, and 85 percent of farmers faced crop losses. Small farmers bore the brunt of the burden and reported a 50 to 60 percent decrease in yield. Carrot and tomato prices increased by five times their original price. Sri Lanka’s rice production fell by 20 percent and prices jumped 50 percent in a span of six months. Formerly self-sufficient in rice, shortages forced Sri Lanka to import $450 million’s worth of the grain.

Worst yet, the fertilizer ban hit the tea industry, its second-highest export. Sri Lanka exported $1.24 billion worth of tea in 2019. These exports paid for 71 percent of the country’s food imports up until 2021. After the April ban, the tea industry crashed, with production and exports down 18 percent from November 2021 to February 2022 for a 23-year low.

Rajapaksa gave up his goal to be the first nation to fully embrace organic farming and rescinded the ban in November of 2021, but the damage was already done. Sri Lanka’s stellar ESG score (a United Nations metric of investments made following supposedly better environmental, social, and governance standards) isn’t doing its people much good.