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  2. School voucher - Wikipedia

    en.wikipedia.org/wiki/School_voucher

    A school voucher, also called an education voucher in a voucher system, is a certificate of government funding for students at schools chosen by themselves or their parents. Funding is usually for a particular year, term, or semester. In some countries, states, or local jurisdictions, the voucher can be used to cover or reimburse home schooling ...

  3. Comparison of e-book formats - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_e-book_formats

    The following is a comparison of e-book formats used to create and publish e-books . The EPUB format is the most widely supported e-book format, supported by most e-book readers except Amazon Kindle [ a] devices. Most e-book readers also support the PDF and plain text formats. E-book software can be used to convert e-books from one format to ...

  4. PDF - Wikipedia

    en.wikipedia.org/wiki/PDF

    The Preview application can display PDF files, as can version 2.0 and later of the Safari web browser. System-level support for PDF allows macOS applications to create PDF documents automatically, provided they support the OS-standard printing architecture. The files are then exported in PDF 1.3 format according to the file header.

  5. List of PDF software - Wikipedia

    en.wikipedia.org/wiki/List_of_PDF_software

    Free ( Mozilla Public License) an Office suite; allows to export (and import, with accuracy limitations) PDF files. Microsoft Word 2013. Proprietary. Desktop software. The 2013 edition of Office allows PDF files to be converted into a format that can be edited. Nitro PDF Reader. Trialware.

  6. Barnes & Noble - Wikipedia

    en.wikipedia.org/wiki/Barnes_&_Noble

    Barnes & Noble Nook. Barnes & Noble Nook (styled NOOK) is a suite of e-book readers developed by the company, [ 88] based on the Android platform. The first device was announced in the United States on October 20, 2009, and was released November 30, 2009, for $259. [ 89]

  7. List of file formats - Wikipedia

    en.wikipedia.org/wiki/List_of_file_formats

    PK4 – PK4 Doom³ archive (opens similarly to a zip archive.) PNJ – a sub-format of the MNG file format, used for encapsulating JPEG files [ 3] PXZ – a compressed layered image file used for the image editing website, pixlr.com. PY, PYW – Python code file. PMP – PenguinMod Project. PMS – PenguinMod Sprite.

  8. List of scams - Wikipedia

    en.wikipedia.org/wiki/List_of_scams

    A vanity press is a pay-to-publish scheme where a publishing house, typically an author mill, obtains the bulk of its revenues from authors who pay to have their books published [52] instead of from readers purchasing the finished books. As the author bears the entire financial risk, the vanity press profits even if the books are not promoted ...

  9. Coupon collector's problem - Wikipedia

    en.wikipedia.org/wiki/Coupon_collector's_problem

    Coupon collector's problem. In probability theory, the coupon collector's problem refers to mathematical analysis of "collect all coupons and win" contests. It asks the following question: if each box of a given product (e.g., breakfast cereals) contains a coupon, and there are n different types of coupons, what is the probability that more ...